Okay, a couple more comments in addition to the excellent postings
already made...

- Weight and Balance. The Bonanza, because of it's leading edge fuel
tanks, develops and aft cg as fuel is burned.
ALWAYS calculate a takeoff and a LANDING cg. You may takeoff within
range, but depending on your leg length, the fuel burn will move the cg
aft of the rear limit.

- Emergency gear extension. This is where you want a good autopilot or
someone in the right seat to fly the airplane while you put your seat
all the way back and see just what it feels like to hand crank the gear
down. (50 turns on that little handle.)

- Go to Avweb and download all John Deakin's columns on flying complex
airplanes and leaning.

Closing comments.
The Bonanza is a sturdy, well built airplane. Its clean aerodynamics
will bite you if you don't pay attention. Learn to slow down gradually,
don't come blasting into the pattern at cruise speed and yank the power
off. Have your descents and approaches planned by the time you are 50
miles from your destination so you can implement them in a planned
fashion (reduce 1 inch mp per minute so that you are at landing power on
downwind).