If you ONLY want to sport climb (A horrible choice IMO) then, as has been said, just get about 10 or 12 cheap quickdraws, and start leading easy routes with many bolts. clip one end of the quickdraw to the bolt, and the other end to the rope. climb higher and repeat. Google "Back clipping" and "Z-Clipping".... avoid them. When you feel good try harder routes.
Make sure your knots and harness are secure, your belayer and you know what to do and what to say, and what you will do at the top of the route in terms of belaying, rappeling and getting down. Have fun.