Early this year I was lucky enough to spend the day at an Andy Clarke (http://www.stuffandnonsense.co.uk/) seminar – see http://forabeautifulweb.com/classes. Andy told us about some great colour and typography sites:
These two are wonderful starting places for discovering a colour palette.
These three are typography crazy.
http://ilovetypography.com/ – a blog
http://www.webtypography.net/ – a book
http://www.typechart.com/ – a tool