Hi Palutena, thank you for answers :)
We decided to go for WotLK. So, Druid and Paladin are one of my favorite class in Hearthstone, so I'd really like to start with one of them. Rogue too has always intrigued me.
Some other questions:
1. What Druid spec would you recommend me between Balance and Feral for WotLK PVE?
2. How about Hunter?
3. To learn about the best abilities and rotation, other than the useful guides in this forum, can I use as reference any WotLK guide in Youtube?
4. There is a WotLK Tier list I can see? I found only the following one:
http://forum.warmane.com/showthread.php?t=379083. It seems very useful for beginners like me, but it's actually a real Tier List?