Items you buy from vendors can be resold on the auction house for a profit. The most common way of making gold this way is finding either vendors with limited supply items that you can only buy a set amount of a particular item from and then you have to wait a while before someone can buy more, or buy items from vendors located in locations that are far off. There are also vendors that will sell items for other currencies than gold. One more important thing to note is that you can sell very common easily available items on the AH as well. Like crafting materials from profession supply vendors that only cost a few copper or silver that can be resold on the AH for gold, and they actually have a decent sale rate.
In-Game Addon Version of My Leveling Guides: As of June 6th the In-Game Addon version of my leveling guides has began construction! It will be a long road before it's finished completely, so I cannot guarantee how much of it will be ready for Classic Launch but there is a decent chance that some starting zones will be complete for it by then. It will be full of features, including: waypoint arrows, automatic updating, and much more. More features will be available for it overtime too.
Yes! I joined twitch in 2013 with the gamer name of FuriousPaul and I streamed speedruns of the classic Castlevania games full time from 2013 - 2017. Lately my streams have died down quite a bit due to working on Classic WoW leveling guides every day. My channel is now twitch.tv/Joana. I will be doing a speedrun for Classic WoW once it launches, so be sure to follow my Twitch channel.
This is a once size fits all pet farm that can generally leave you with a small sum of gold if your server is low on this specific pet. (You can always check on the undermine journal). It takes place in the Ihgaluk crag and is generally performed by sweeping the oozes in the small muddy pools surrounding the area. An easy spot to hit, that really isn't farmed all to often. I was able to get one in the video after a small 24 minutes.
War Mode: War Mode can be turned on at level 30 through your talent window, and will give you 10% bonus XP. You will, however, be attackable by players of the opposing faction, but changes have been made so that all players have a fair shot in a fight and even low-level players can kill much higher level players, and at least not get ganked and one shotted. Note: As of patch 8.1, you can get an additional call to arms bonus with war mode on if your faction is underepresented.