You should see my previous post about tac shooting + p99's and fun weekends.
To begin get some paper plates, draw a triangle on them and put as many holes in the triangle as possible. Good stuff there.
Do rapid fire drills. Same paper plates, same triangles do this for 5 rounds and reholster.
Make some human shaped targets from cardboard, draw whatever you want to on them, put holes in the shapes.
After you do all of this, do it again! Do it until your fingers and hand webbing hurt. After your done go get some good food to eat. Also shoot with friends who DO this kinda stuff if possible. Also check out local NRA stuff since they might have some courses for you to take at ~$100.