Invest - If you do not plan to rush to level 60 and want to take your time instead, this tip might come in very handy for you. The value of many Items will increase over time because more and more Gold will find its way to the market. To take advantage of this, you can stack up on various crafting materials with the intention of selling them on a later date. This will require a lot of patience and some Grinding if you want to make a good profit but is certainly worth your while if you are an economy-oriented Player.
Loot everything - Every single item in the game has some value and you should take advantage of this fact. Grey items can be vendored for that little bit of extra pocket money and white stackable items are needed for crafting, which means that people will generally buy them if you post them on AH for low enough price (if you can't be bothered to post Auctions, you can just vendor all of them and be done with it). Some of the looted items will rise in value over time, so you might also want to take your time and store them on Bank Alt.
Nov 15 Classic Box Cost Disappointed in the decision to bundle the subs and (at least for now) not have a separate Classic sub option. That said, can we at least get a separate box cost for access to classic? It would: - help alleviate temporary bloat and subsequent dead realms - servers would be more stable population-wise over time - remove the bulk of the need for sharding - give a solid idea of how many servers will be needed - allow blizzard to set up a separate classic forum for those with a monetary commitment - with a separate forum group, feedback would be limited to those with a vested interest The subs would still be bundled, but there would be a box cost, akin to what one would have to pay for BFA access. A very good to-the-point post from later on in this thread:... Another good post about how the current setup would necessitate sharding:... A decent (albeit short-term) alternative:...Brokenwind314	Nov 15 

Nov 15 Little Test on Class Quest Rewards Hey guys, I did a little test on certain class rewards to check whether they are adequate or not for the level they are obtainable. Paladin - Verigan's Fist is a famous weapon, added probably during the Naxx patch and lot of paladins remember lasting it for long time. Obtainable level is like 22, with party of same level players. And the Mace is equivalent to a level 26 Blue Mace. This means it's not bad! Warrior - Brutal Hauberk is infamous warrior chest. It is obtainable at level 20(as I remember), but it requires running a level 28+ dungeon. And it's mediocre - it compares to a level 24 blue, which is stupid. Whirlwind Axe is a famous warrior weapon which requires a nanny. :D You get level 30 and then pay people money or beg them to help you. This is not even doable with normal party until 35ish. Whirlwind Axe is equivalent to a 35 level Blue Axe, which is decent but still seems to be forcing it. Unless you hire a nanny, being social will probably help you get it at around 35-36 with similar level players. Warlock - Enchanted Gold Bloodrobe is pretty famous. I am not sure when it is exactly doable but is comparable to a level 35ish Robe. I think the verdict is that Paladin's Hammer is by far the best and the reason for it is that it was added later, at the end of vanilla, when Blizzard had more brains. :DHolylr1 Nov 15
Check Item's Vendor Price before posting it on the Auction House - Selling items on the Auction House below their Vendor value is a common mistake. Avoid it like fire, and always make sure that you are not losing Gold on your Auctions. If you plan to sell an item on the AH for a price just a tiny bit higher than its Vendor value, you might be better off just vendoring the said item (this will allow you to avoid the risk of losing an Auction fee if your Item doesn't sell). 

Recently, Blizzard provided their own WoW Token system for players to buy and sell World of Warcraft Gold. However, the constantly fluctuating supply and demand means that prices will vary. Consequently, getting the best prices isn't guaranteed, nor do you know when you'll make a sale. You also can't trade or resell any tokens you buy, as they become instantly "Soulbound".
Through out the game, the quest log will be capped to 20 many times.  The guide makes use of maximizing the total amount of quests you can accept at once.  Because of this it is important to follow the guide exactly and only accept quests if the guide tells you to so you won't run into issues not being able to accept a quest.  If you do accept a quest that is not listed in the guide, write it down because you may need to abandon it in order to keep following the guide if your quest log is full.