User is right saying you should cut the rough shape with a band saw. If you don't have one, you can use a jig saw but use the most rigid blade that will follow the form. The next step will be to use a table mounted rotary sander/ drum sander to work the piece to the scribed line. It will be next to impossible to make a well shaped piece without this step. Check out a few episodes of "New Yankee Workshop" online (PBS) to see the techniques. Keeping a full length of grain top to bottom is extremely important,(as mentioned) otherwise the piece will split in time. Good luck with your project.
As far as books, I highly recommend The Complete Book of Woodworking: http://www.amazon.com/The-Complete-Book-Woodworking-Detailed/dp/1890621366/ref=sr_1_1?ie=UTF8&qid=1335885982&sr=8-1. It's easy to follow even for the uninitiated. It goes over the major tools, what they are used for, and has excellent instructions on some starter and intermediate projects. There are even some workbench projects toward the end, one of which is made only from plywood and 2x4 lumber. I made it with a jigsaw and really uneven cuts, and it's held together well for about a year (it's usable for everything except hand planing). I'm also a software engineer by trade and learn well from books, so I spent a good few months obsessing over this book in my apartment before buying a house and really getting started.
For video instruction, The Wood Whisperer is one of my favorites; he gets into what tools are used for, how to set them up and tune them, and has some videos dedicated to safety. He's also very technical and comes from a science background, so the engineer in me relates well with him. He doesn't leave out many details. Fine Woodworking is also very good and for $5 a month you can get access to a ton of video content.
http://www.thewoodwhisperer.com
http://www.finewoodworking.com
SawmillCreek and WoodworkingTalk are nice forums to search through for tips and discussions about what tools are best used for what projects.
http://www.sawmillcreek.org
http://www.woodworkingtalk.com
Most of these will discuss fine woodworking, furniture making, and detailed joinery, which you may or may not be interested in. All of them, however, will give you information you want about tool usage. It may be more detail than what you're interested in for the projects you describe, but if anything you'll be over-prepared.
Best Answer
If I understood the question correctly, I would use an oscillating tool for something like this. They are pretty forgiving and allow precise cuts very close to the ground. The main downside I can think of is that it might be slower than using a jamb saw.