I would have beaten you to the post but I had to wipe the orange juice off my screen - after I spit it out in utter dismay and amusement at his approach to soliciting further help.
Tony, I agree with you in one sense; When buying something I don't pay more than the value I perceive that item to hold. If you don't think it's worth the money to hire a pro then by all means you should do it yourself. The public libraries have information to help you as do the 'big box' improvement stores and the internet.
What you're asking requires considerable investigation, analysis and knowledge to develop a proper answer (as previously posted). I wish you all the best in the acquisition of your new skills. Be aware though, if you think it costs a lot to a have pro put it in, you definetly don't want to see what it'll cost to have one fix or replace what you do. Good Luck and work safely.