Since you do not list a location we have no idea what your wall outlet voltage is? Additionally, since you don't list a location it makes it difficult to call out the parts since I don't know what your source of parts is?
Thus if you want a regulated 5 volts I suggest you start with a regulator like the LM 323. The data sheet will tell you how tight it regulates and show some basic circuit drawings. The LM 323 with a heat sink is good for 3 Amps so should meet your needs. You will also need a transformer, filter capacitors and some hardware.
Ron