The gaming group I'm in is returning to D&D after not having played it for quite a few years. During character creation the following question came up:
Can feats, powers etc. from all three PHB books be mixed and matched as one sees fit? Or are, say, feats from PHB2 inseparable from rules that are in PHB2 but not in PHB1?
I only own PHB1 right now, and I'm using the DDI Character Builder, which doesn't seem to differentiate between the PHB (1) and PHB2, PHB3, Divine Power, Martial Power feats, powers etc.