At Level 18, you unlock Freezing Trap which is a long-term crowd control for all Hunter specs. It places a trap on the ground that encases the first enemy (not bosses or most big encounter adds) to touch it in ice for 1 minute. The effect breaks on damage. The trap has a 30-second cooldown, and the trap will exist for 1 minute after placing it. This is useful when you are feeling overwhelmed by too many mobs, for temporarily taking out a powerful mob from the fight.
5. at least get 4 characters with these professions. Tailoring/Enchanter; Minning/jewelcrating; Minning/Blacksmithing and Herbalist/alchemist. You can skip blacksmithing and take Minning/herbalist with 1 of your alts. While doing your world quest in argus, try to get all the ores and herbs that you can. Send all the cloth and greens to your tailor character.
Some people have made arguments that quest blues can sometimes be more powerful than heirlooms, especially with sockets. I'm not convinced. The simple fact that you never have to even look at quest rewards will save a non-insignificant amount of time over the course of leveling. Also of consideration is the value of enchanted gear never having to be re-enchanted.
The next step on the stairway to the gold cap is the internet. Often times, WoW players forget that various websites can have good information. However, many of them are dangerous and just filled with lies or exaggerations. It is my advice that you stick to three main websites: Wowhead.com, Worldofwarcraft.com, and Mmo-champion.com. On wowhead.com, one can see average prices overall on every sellable item currently in the game. This is a nice start; however, most servers have economies that differ greatly. I played on one server where a +healing red gem went for 100g and another where the same gem went for 55g. Swings like this are just the beginning. Random drop epics, especially those BoEs from newer content sometimes differ by thousands of gold! (Consider this fact especially if you are planning on transferring, as this can be the greatest gold mine in WoW). Worldofwarcraft.com provides a little known list containing the most common bought items on the auction house across every server in an aggregate sense! This means that they average every server before listing the results. Unlike wowhead.com, this presents the reader with a much more accurate portrayal of what they may expect on their own given server. Results will be slightly different, but this tool should not be overestimated.
Materials ('mats') - items that get used in professions. This is driven more by use than by source; for example, copper is very easy to mine, but it is widely in demand, and you can often find bargains in copper, bargains you can profit from. Contrarily, some very scarce mats may have low demand, may only be used in one mediocre recipe, and may not sell.
There are a lot of skills and spells you can train as you progress, each of which costs money. When you can afford to, you should train all the abilities that your class trainer offers. If you're completely broke, it's fine to put off upgrading abilities you rarely use for a level or two so that you can upgrade your most-used abilities. If this happens, you should ask yourself whether you are spending too much money on buying unnecessary equipment upgrades or leveling production trade skills. Be sure to save enough for class abilities and riding training before spending money on other things. This assumes you're earning money at a rate where buying skills makes a difference at all. If you have a hundred gold from two gathering professions by level 20, those skill ranks costing a fraction of a gold won't make any difference to your purse.
Using most of the crafting and flipping methods in this guide I have made 12 million gold since Legion Launched in October last year. This is after paying for 2 accounts using gold by buying tokens throughout most of ther period. I recently reinstalled TSM, but just the last 30 days I have made almost 2 million gold in profit as you can see. So I think it’s safe to say that this works.
At 96 the standard wisdom is to immediately drop what you're doing and proceed to Spires of Arak and do the quests to unlock the Inn, granting a further 20% experience bonus while in that zone. You'll want to do that eventually anyway, but I'm not sure it outweighs the quest experience from Gorgrond. However, if you decided to go to Spires immediately at 96, restrict yourself only to bonus objectives and again leave Treasures until you're 100+. Make certain that when you being the quests to unlock the inn, you speak with the quest NPC to also learn Archaeology, since it's required to collect several of the treasures in Spires.
I recommend not counting on transmog sells for your monthly gametime. Its a great market, but also pretty random. You have to have the right items posted at the right moment if a player needs a certain item. If this is not the case, of course you will not sell anything to him. There are people making millions of golds a month with transmog. But they are very professional at it and it really takes a lot of time.