I just got them dialed in real good recently, so ill do my best to help. but be warned i suck at explaining stuff.
what i do is bend my knees just a little bit and lean back behind the seat. Lean back enough so that your front is at a height you can balance well at. also, really think about what your doing, if your front is dropping lean back more, if its tipping lean forward more.
learn to pump the bike. its somethin that i just caught myself doing one day. learn how straigtening and bending ur legs effects the bike.
n no u dont need brakes. i ride brakless and i can out manual everyone i know.
and i no u dont want to hear it but practice practice n practice some more. i learned by trying to manual and as soon as the front dropped, get ready and do it again. it only took me a month or two.
try watching some videos or other riders it helps give you an idea of what u have to do.
i hope this helps.
if not just hate me like everyone else