The DIYLILCNC: Open-Source Plans For a Low-Cost, Easy-to-Build CNC Mill. (v1.0.2)

Step 7: Make Something!

For a detailed list of free/cheap design software for CNC milling, see this link.  CNC fabrication can be very simple or very complicated depending on what you're doing.  Don't be afraid to ask questions at the DIYLILCNC forum, or at local hacker spaces near you.