1) What do you want to do? 2) What books are usable?
A Grognard's Guide to D&D Next/5E Rules Spoiler: Other stuff I've done Show 5E Rogue's GuideExtended Homebrew SignatureNiche Ranking SystemGuide to Melee CombosIncreasing Size, Unarmed Damage, and ReachHow to get Pounce or Free MovementX stat to Y bonus