Swim Speed Potions (used especially at lvl 37 for Faldir's Cove in Arathi Highlands and lvl 57 in WPL).  Try to get multiple stacks of these.  I also recommend keeping a stack of these always in your bags.  You will frequently pass rivers and lakes and can use these potions to pass them faster through out the guide.  Please note that these potions do not stack with Druid's Aquatic Form and Glyph of Aquatic Form.
Swim Speed Potions (used especially at lvl 37 for Faldir's Cove in Arathi Highlands and lvl 57 in WPL).  Try to get multiple stacks of these.  I also recommend keeping a stack of these always in your bags.  You will frequently pass rivers and lakes and can use these potions to pass them faster through out the guide.  Please note that these potions do not stack with Druid's Aquatic Form and Glyph of Aquatic Form.
For some weird reason Warlock used to be underrepresented in vanilla WoW. However, the least popular doesn’t mean that they were bad. Warlocks had amazing damage and some truly unique utility abilities allowing them to summon players or create Healthstones for the whole group. Similarly to Hunters, Warlocks were amazing for solo players with the ability to summon various demons to help them.
It’s important that you levelling in certain areas around your characters level to gain the full XP reward for slaying monsters. Below is a list of all the best location for grinding XP from level 1 to 60, these locations are good for AOE spells and should have plenty of mobs. The Level you should be before you enter that specific location will be indicated to left in a Blue Color for Alliance [Lvl 35-39] and Orange Color for Horde  [Lvl 35-39] the Mobs you are looking for Bolded [Mob Name].
- Gold traders, both buyers and sellers are disliked everywhere, literary on every realm. But have no worries, we have developed very safe practices for trading the gold between ours and your accounts. If you require a specific way of delivery to you (AH, Face2Face, Mail, CoD) we can oblige to your request - just send us an e-mail right after your purchase (include your character name) and we will take care of the rest.

Only really to expand on Gráinne's comment as regards the 'collecting' and 'roster development' sections - which are, as said 'distinct' although they are intrinsically linked - I would like to point you in the direction of the in-game Achievements > Battle Pets > Collect tab. There are a series of achievements called Raiding With Leashes, pretty much all of which can be completed via the auction house - if you have the gold/inclination - or by completing old raids.
Each battle that you win will yield experience for each pet that participated. However, deceased companions will not receive any experience (so make an effort to keep them alive by swaping in a different pet). Experience gains are based on your pet's level compared to the wild pet. Defeating a higher level opponent will grant more experience than a much lower level one, but be ready for a tough fight!
The closed beta for Blizzard’s upcoming World of Warcraft vanilla server option launched on May 15th, and Blizzard has now listed some of the apparent issues that the development team is aware of, including class and combat related issues alongside missing textures and more. Blizzard mentions that this list is not a complete depiction of what they’re aware of, but a sampling of issues they believe players may encounter on regular basis.
If a companion dies during the battle, it will need to be resurrected before it can participate in another encounter or be summoned as a traveling companion. Get that pet a medic! Or in this case, a Stable Master. Stable Master NPCs can heal and revive your pets for a small fee, and there is no cooldown on the Stable Master's heal. You’ll find Stable Masters in major towns and cities across Azeroth.

The closed beta for Blizzard’s upcoming World of Warcraft vanilla server option launched on May 15th, and Blizzard has now listed some of the apparent issues that the development team is aware of, including class and combat related issues alongside missing textures and more. Blizzard mentions that this list is not a complete depiction of what they’re aware of, but a sampling of issues they believe players may encounter on regular basis.
I'm happy to see them really committing to this. I didn't think I would be all that interested, but I will sure give it a go. Personally I wouldn't mind quality of life improvements and most of my friend don't really care for a 100% authentic vanilla experience but they want the old zones and world, a game world pre-Cataclysm but have no requirement for it being "authentic" to World of Warcraft Patch 1.12.2.
Because the thing is, that sentence applies to both sides and it drives me crazy. Most comments about either Classic or Battle for Azeroth end up in mud-slinging matches for no real reason other then one side is being negative about the other side's favorite version of WoW. And the funny thing is, there are way, WAY more commonalities than differences in there, after you remove the ego of "my WoW is/was better yours sucks". In the end, no matter what anyone says, they are talking and arguing and fighting about it because they care about WoW.
Always sell all items on Auction House. If you are not sure about its value, then check the market. There are some risks that item won’t be sold and you will lose money just putting it on Auction House. Good idea to make bank low level characters and keep everything there until the weekend. All sales increasing on Friday, Saturday and Sunday. Besides, you can advertise in a trade channel to inform people that an item you are selling has been put on Auction House. 
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