The heroes are organized into laning roles and tiers designed to help new players learn team composition during drafting. Obviously this is just a beginner's guide, but it's a good help nonetheless. From left to right: Offlaners, Supports, Supports/Mids, Mid Solos, Mids/Carries, and Carries. The bottom left is all viable junglers. The heroes are also sorted into my rough opinion of tiers based on their current power in the 6.77 patch.