Mechagon and Nazjatar will both be endgame experiences that draw on the best elements of previous endgame grinds: the Timeless Isle, Argus, Tanaan Jungle, and the Broken Shore. Azshara’s domain of Nazjatar will be a little more typical, while Mechagon will be “what you might expect from a gnomish paradise,” says Hazzikostas. He describes it as more sandbox-y, unpredictable, and akin to a playground. Both zones will have flying enabled.
Incursions are a new world content activity that are unlocked when one character has unlocked World Quests. This feature is unlocked account-wide meaning that all characters on that account can access Incursions even without being Level 120. This provides for a lucrative experience acquisition method that is available in a similar pattern to what Legion Invasions offered with nearly an entire level earned by completing an Incursion series which involves four World Quests and one mini-scenario at the end. These also grant item level 370 weapons and Azerite armor, so they should be done any time they are up. Incursions follow a similar schedule to Invasions and are available for 20 hours once they are initiated.
Escort quests can take awhile to do.  I have thoroughly tested all the escort quests in the game for time/xp.  Most are worth doing, but as long as you are able to actually do them without failing.  Most require you to pay special attention to the escortee as most are fragile and will die easily, so do your best to keep mobs off of the escortee during escort quests.  The longest one in the game is the Tanaris chicken escort.  The chicken escorts are only worth doing if you were able to do all 3 of them, as if you do, you will be able to turn in an additional easy quick XP turn in quest at BB, which makes them worth it.
Even though the guide was developed with a hunter, the guide can be followed by any class.  Except you have to do your class's quests which aren't a whole lot.  I do have full intention to make my guide friendly with all classes in the future by listing all of their steps as well.  There will be a toggle that allows you to show which class's steps you want to see in the guide.  But this is coming later.
Nearly all quests offer cash or items as a reward, and often both. While completing quests shouldn't be your main form of wealth generation, it is something you are going to do anyway. The key to making the most of quests is picking your reward items wisely. Don't always pick the item that most fits your class - if it isn't demonstrably better than your current item, instead go for whatever reward sells for the greatest amount to the vendor. You can select the in-game interface option to display it in the tooltip. In general, if you can't use a quest reward for your character, pick either a plate-armor or melee weapon as your reward--these tend to sell to vendors for more than other items.
Professions: This may seem strange for a leveling guide, but the first opportunity you get, pick up both the Mining and Herbalism gathering professions. Not only will this allow you to track many various quest objectives on your map, but you also get a fair amount of experience whenever you gather. I'd put it at around 10% of a quest turn-in per gather. Since most of your wasted time in WoW is travel time, stopping to gather ore or herbs can keep your exp/h rolling as long as you don't go too far out of your way. You should only gather if it's convenient, and on the way to an actual quest objective. Don't make gathering your priority.
Alchemy is a great profession for gold-making as the main outputs are consumed on use, this means that there will always be demand for new potions and flasks. The old world recipes are also very profitable. I haven’t written anything on BfA Alchemy yet sadly. The best guide I could find was this one by Para on youtube. I think it’s missing some important details, so I suggest you read my post on Legion alchemy as it covers everything you need to know about procs, which work the same way in BfA, even if the rank 3 recipes are obtained in a different way.
Heirlooms are special pieces of armor that level up with your character, so they have stats that are always respectable for your character’s level (up to level 110). Heirlooms that fit the head, shoulder, chest, legs, and back armor slot offer an experience bonus. The total bonus is 45 percent if you have them all. It’s also possible to acquire a ring that adds another 5 percent, but you must win a fishing contest acquire it, and that can take some time.
So gibblewilt is a special NPC. He is the only NPC that drops the Foremens Vest chestpiece.  Generaly this transmog is a bra-less vest – making it VERY popular in the transmog community (I play on moonguard, and are highly invested in the transmog community, so I know).  Anyway, even though the drop chance is hell on high water – snagging one can yield you profits of 50,000g or more. Whats better is usually noone can be found farming him, so you can camp an alliance character nearby, and kill him ever-so-often.  Hes located just outside gnomergan.
The most rare and expensive poly morph tome drop and for a reason.  The bears that drop it are VASTLY spread out across the zone and getting one can mean hard farminh for a while.  They also take a while to respawn so watch out.  Getting one to drop can mean a staggering 48,000g, and on top of that compared to other pet farms and such, they have a much higher drop chance.  Simply head over to dragonbligh ona mage character (class trial is perfect) and start the killing.  Cross you fingers as there is an 0.4% chance to get one on each kill.  Thats actually pretty high considering..
They seem to have expected some things, though, see adding pets with aquatic damage (gun and ooze) aswell as a resistant cockroach to stop us from cheesing everything with elementals. Yet, a fact their damage output is low combined with shields not checking for racial damage means this mechanic prevents a lot as you mentioned. The last boss has got an ability to remove basic shields so perhaps that was not in oblivion either… unlike the reactive damage. Also, an ability that forces swap altogether with an ability which prevents from being swapped, including critters? I can't say I like it.
Heart of Azeroth:[5] Our world is direly wounded. Players will be summoned via Magni Bronzebeard to Azeroth herself. She will gift players with a medallion called the [Heart of Azeroth]. Her life essence seeps from the world in the form of  [Azerite]. When players wearing the medallion come in contact with azerite, this sought after resource becomes a source of power for selected pieces of armor, providing players a way to level them up. This feature replaces the artifact system of World of Warcraft: Legion. Currently the plan of development is to limit the upgrade system to 3 pieces of armor. Players will be able to choose the stats they want to better fit their play-style.
2. Once you have an interested buyer, stay firm in your price. This does not mean to never make them feel like they are getting a bargain. You can subtract 5% off the price and not be hurt as long as you still make a profit! Remember this, as that 5% may not be a big deal to you, but the buyer will feel special and might buy the item for the slightly reduced price. I can not emphasize enough that this is not the same as undercutting! Do not drop every good every time or you develop a reputation as a soft seller and people take more liberties in their dealings with you. If you give someone a constant 5% discount, then they begin to want 10% and then 15% until you no longer make a profit. Discounts are used when you feel that the seller may be pulling away and you really want to just profit and move on!
Thanks so much for the replies. I think I am somewhat of a collector/roster builder. I go around doing the dailies but I also like buying pets just for their looks. I watched hazelnutty on youtube last night. I think I will focus on doing the expeditions when I have time to get all the pets that come from that. Then I will go back and do old raids like Eekwibble suggested.
Raw gold farms revolve around farming areas where the mobs drop a lot of gold and you also get items you can sell to vendors. The primary goal is to just generate pure gold. The most popular raw gold farm is to run all the Cataclysm raids at 25 heroic. This will net about 1.5-2.5k gold per raid, and a chance at some rare mounts. Raw gold farms are great if you don’t like interacting with the AH, dislike variance or you are in the process of building up your capital.

Enchanting is a crafting profession that allows you to enchant gear with stat increases. It also allows you to disenchant gear for crafting materials. Enchanting uses crafting materials that can only be obtained from disenchanting gear. This means the only source is either crafting yourself or buying from other players. As the profession mostly revolves around stat increases only the legion recipes are relevant. The main ways to make gold with the profession is crafting and selling enchants and doing the enchanting shuffle. You can also make tomes of illusions, but they have fairly low demand.

While leveling, try to make use of the new Battle of Azeroth experience gem, Insightful Rubellite, which gives you +5% experience. Equipping one of these requires a socket in your gear, so try to hold on to a piece of Legion gear with a socket or acquire one of the Legion Legendary rings since every class has one. Each of the rings includes a socket. You can acquire one of these rings rather easily by doing World Quests in Legion zones and acquiring 1,000 Wakening Essences that can be used to purchase a legendary ring in the Legion version of Dalaran.
It comes with a detection system for quest which monitors your previous actions and makes improvements based on them. A directional arrow that appears on the screen will indicate the best direction. It is fully automated hence saves you the trouble of having to click when moving to the next level. By following the guide you will require fewer than 7 game days to move from 1 to 80. You can begin from mid-level and let the guide lead you through the next levels.
EXPLORE TWO FABLED KINGDOMS – As a champion of the Horde, travel to Zandalar to persuade the trolls to lend their naval might to the war effort. As a defender of the Alliance, sail to the seafaring kingdom of Kul Tiras, home of Jaina Proudmoore, and rally its inhabitants to fight for your cause. Once you’ve successfully recruited one of these proud kingdoms to your faction, infiltrate the enemy’s newly claimed territory.