CAUGHT IN A WEB OF MY OWN!

I am now faced with serious issues in my life. No, nothing as trivial as surgery. I have been forced to download Firefox. I use a Mac for all my comp work, and the Safari (version 3.0 beta) was great, I thought. I just bought a domain for a new website, and bought a version that would help me design my own website without professional help. In other words, web designing for dummies at a price (remember, a fool and his money are soon parted!). When I went to try out this WebSite Tonight (a product of GoDaddy), after having paid my $100, I got an error message: "WebSite Tonight does not support your browser (Safari), please use Firefox or Windows XP."
So (eyeballs herniating through orbits, stretching optic nerves to breaking point), Dear Daddy, why didn't you ask me what browser I use before taking my money? You thought I was some stupid asshole who could be conned that easily, eh? Er, how did you know?? (E. Balls replaced in situ, appearance restored from Mutant Martian to Old Fart.)
Anyways, I downloaded Firefox, with its promise of being lightning fast, and have been prompted to download another 24 add-ons that will make life as smooth as, well, Thank God! As one who has looked at new downloads as you would look at a blue, new growth on your nose-tip, I am now in mortal crisis.
Any ideas or suggestions for using web development tools, all ye Web 2.0 Death Eaters?