Cloth diapers help!

Dana
Looking to use cloth but feeling overwhelmed and all the different kinds.  I want to invest in just 1 and not try several different kinds.  I've looked into the flip which is made by bumgenius (a friend uses these on her 11 mo old for only a couple months).  I like the fact that they have removable inserts so you could potential reuse cover.  Also, how many would I need?!  And help is appreciated!!!!