Why do you want to estimate, the jobs, just look at what the other guy is charging, why waste all that time looking things up, after a few jobs, where you loose money, just add a few bucks, and see id your still loosing, if your still loosing, just keep increasing the next job until your check book balances.
If your serious about doing things the right way, try this book for some basic starting points, on estimating. Craftsmans Books on Estimating. If you like the Craftman Books, you can move on to more complex estimating systems from there.
Also, keep track of your time and materials on completed jobs. Nothing will be more accurate than your own numbers.
That's gold, Dave. It's also where a computer really comes in handy, rather than digging through screeds of paper records. Not that it isn't a silly idea to have a paper back-up, we all know what computers can be like.
Let's face it, these days if you're not young, you're old - Red Green