Being a DJ is more about knowing a lot of music and how to organize it into a performance that gets people involved. You need to be able to read a crowd, build up their energy, keep them at high energy a while but not too long, then bring them down gently and change the mood to something new. It's an art, and it will be inside you like all art is. After you have built up your talent at knowing what to play, and how long, and why to play it, you can worry about the gear. At that time you should talk to other DJs to find out what's worth the money and what's great but inexpensive. The technology changes fast so whatever is hot today will be obsolete tomorrow.
The type of equipment that you will need to buy as a DJ include turntables, mixable CD players, headphones, microphones, stereo cables and a DJ mixer. You will also require an amplifier. You may find information from the following site http://www.kpodj.com/.