I'm pretty much going by the WotLK Classic, pre-raid, BIS builds on Icy-Veins. Here is the Arcane mage build as an example. It also has gear you should get, rotations examples and some other stuff. Most of this is common knowledge, but for classes you don't play all the time, it's excellent to get started.

https://www.icy-veins.com/wotlk-clas...talents-glyphs

If you want another class, just look on Icy-Veins or type in "beastmaster hunter wotlk classic pre raid bis." or whatever class you are looking for.

I only have a few changes to some talents, like the fire mages I have 2/2 for Firestarter, they have 1/2.