The second step is to start building a rack. Buy passive protection like nuts and hexentrics first. They are less expensive than camming units and a little more versatile. The HB Offsets are excellent for Yosemite pin scars and these Metolious Curve nuts are great for standard placements. Check out a quick instructional bit from EHow on placing stoppers.
Now comes the fun stuff. The Touchstone gyms have a fun line of Black Diamond Camalots as well as Metiolous cams. Tri-camming units like the one pictured below are good for pin scars and small cracks.
Make sure your gear is solid. Don't be this guy!
Try your hand at one of the many cracks at the Touchstone gyms, keep an eye on the weather in Yosemite, and get ready to get TRADICAL!