First off, it wasn't stated whether you have inboard, outboard, or same
way turning props.
Every time you leave the dock, take 10 minutes in some open area and try
different things:
One engine, with and without steering, then the other, then add throttle.
Two Engines, with and without steering, then add throttle.
Two engines, apposed, with and without steering, then add throttle.
Two engines apposed with opposite steering at various angles, then add
throttle.
See how different winds and currents affect you at different angles of
attack and different speeds.

Learning a new boat, will not happen overnight ..... keep your maneuvers
slow and simple to begin with, and only add "tricks" as you learn their
affect (or is it effect?), but never be satisfied .... when conditions
are right, try some "off the wall" ideas .... BG sometimes these will
have amazing results.

otn