Need help before begin manipulate

Also i plan to use almost 50 leds RGB but i don't know what to use

The easiest way to for that would be, in my opinion, WS2812 RGB individually addressable LED strips.

Do you have some good references for the motor controller?

If the motor only turns in one direction a logic level MOSFET sized to handle the motor stall current would be a good choice. If the motor must rotate in both directions an H bridge motor controller/driver is called for. Without more information on the motor (motor type, rated voltage , stall current) it is impossible to recommend a specific driver. Pololu has a wide variety of motor drivers.