1. I have a warrior with thunderfury, is it still a good weapon? I used to tank a lot.
If you level as prot and do dungeons yes, or as fury 1 handers sure. But do strictly questing you’re probably better off as arms or titans grip. I would still have it hand in a sword and board macro though.
2. What quests/attunement should I do?
Don’t worry about that, basically, all have been removed for pre-patch. Just level up fast so you can grind some BGs for the brutal glad gear.
3. I have an epic non-flying mount and only few WotLK Classic gold, where should I grind to buy my flying mount ?
In TBC slow flying mount training was +60% move speed for 900 gold and fast mount +280% was 5000. Fast is unchanged, but slow is now +150% and only 250g! and available at level 60 (50g more for the mount at whenever rep I was on my DK). As long as you don’t waste any gold as you level you’ll be able to buy it fast.
4. What are the required addons now a day?
Questie DBM and your auctioning addon of choice are the only real essentials. I use gathermate for mining nodes and have a bunch of pvp ones but you don’t need them.
5. I have another account with a spriest for pvping, heard it was good and fun, is it true?
Spriest pvp at 80 will be super fun. However, so is a warrior. Depends on your play style, both are very good.