The League of Augsburg website has a pdf quick and dirty guide to painting World War II Germans. There are some good suggestions in here as to which Vallejo and other paint lines to use.
World War Two
Final Round WWII Rules
Final Round is a set of free wargames rules for World War II infantry combat games.
Final Combat Micro Melee
Final Combat Micro Melee is a set of free wargames rules that converts the Final Combat skirmish system for use with Micro Armor.
1943 World War II Rules
From War Times Journal, 1943 is a set of free wargames rules for battalion level combat in World War II.