I do think that an inexperienced player should stick to full ring for the first few months. 6max requires different skills; there's more post-flop play, marginal hands become more valuable, and there's more room to make m0oves, all of which are abilities that really do need time to develop. You really need say 15-20,000 hands before you'll get a basic, instinctive feel for play - it's safest to get this camping and watching at the 10-handed, low-buyin tables.