Go onto youtube and search for the channel "ellaskins." He's a Dj that has a ton of videos on DJ'ing that you'll lose days of sleep watching.
Also, watch videos of people on youtube DJ'ing (mostly bedroom DJs) they'll usually have a list of their gear or you can prob msg them and ask them about their setups and how to start.
In terms of making your own music though, you'll need a program like Reason or Ableton live as well as some hardware like a midi controller
We've got your war!
We're at the gates!
We're at your door!
We've got the guillotine...