Yes, Overhate is right, the companions methode is the best I think, that is a heaven for a warrior. Expert archery trainer (Aela), Master heavy armor trainer (Farkas), Master 2-handed trainer (Vilkas), Expert block trainer (Njada), Expert one-handed trainer (Athis). And technically all for free after finishing the questline and hiring them as followers. I used it too for leveling heavy armor and two-handed.