RE: Exactly what wind can do?
I would like to mention what RC-FIEND said here. G U S T !!!!!. Thats what takes you down. When in winds and gusts, try speedy landings. Do not land the plane like when without wind. When there is no wind, I usually land in a way that when the landing gear/wheels are 6 inches from the ground, my plane is almost stalling. So I love nose up landings. But not in high wind.
Alway check the air direction when landing, and avoid tail wind landings as much as you can.
If you have cross winds at landing, start using your rudder. Learn and experience at high altitude, and then use it at landing. Rudders makes landing very easy in high cross winds.