Building a web based business from scratch

Well, I've taken the plunge! After tinkering with the internet for the better part of two decades, and not taking it seriously until a few short years ago, I'm pulling out the stops and starting a web based business from scratch.
In 1990, I bought my first computer, a used HP Netserver with a 60mhz intel processor, 1gb scsi harddrive (didn't even know what that meant) and 16Mb of RAM. Within a week, I had the bug. I started researching and hit the local computer parts supply house, http://www.computerdirectoutlet.com/, and found that not only were their prices comparative to the online stores at that time (still are) but also that they were very "user freindly" in that you could bring your computer in, get advice from a good tech, install parts right there in the store and make sure everything was up and running before you took it home. Great concept, and I was off to the races.
To make a long story short, I built a decent system, learned a lot in the process and had a great time. But job calls, especially when you're a self-employed builder, and I let the whole internet thing blow by.
Years later, I got tired of my old HP (not the original Netserver) and decided to build another computer. Man, was I in for a shock at how much things had changed in the industry, it was like starting from scratch all over again. But with a little continuing education of the self-inflicted type, some money and a few hours labor and my new scoot was up and running and man if felt good to do that again.
So here I sit, at a crossroads, I've got my first ever website http://www.heathersheart.com/ for an experiment more than anything and to learn about CMS's and all the necessary tools and knowledge needed to run an online business and I think I'm ready to take the proverbial bull by the horns and do it! After all, the residential construction business is dead in the water and the competition for the work that is out there is like a school of sharks in a feeding frenzy going after a guppy. So what's to lose.
As I go through the process, I'm going to post the daily efforts just to let people know if a gaffer like me can actually make a go of it, and to make of manual of "what not to do". :-). It might help someone thinking of the same thing and I certainly won't go all geek on you.