PaulRB:
You cannot animate the single colour strips. You can fade/flash the whole strip but you cannot control the LEDs individually. Single colour strips normally take a 12V supply. For 5m strip, the psu must supply 1A if it has 30 LEDs per metre, or 2A for 60 LEDs per metre.For transistors, I would suggest irl520 (not irf520) or stp16nf06l. But there are many other suitable ones. You need n-channel MOSFET with, importantly, a logic-level gate, in a TO-220 package.
Thanks for this info,
I also had one more question that I had a TIP122 Transistor Laying around , so can I use that without a Mosfet so I don't have to go to the shop ( which is very very far .away from my house )?