Josh, I admire your mindset but it will take more than that to do what you're proposing -
First, don't think I'm trying to discourage you from this, I'm not - it's just that even building a NORMAL, habitable building is a large project if you're not experienced in the many ways of building. Building a sound-proof (I don't use that term, since it can't be done) building is about like saying "I've never driven a car, but I'd like to race at LeMans next week, can anybody tell me what to watch out for?"
There are dozens of skills and hundreds of tools that are normally used by construction people on a daily basis, and before you start a project like this you need to at least know what they are, so you'll know which ones you can master on your own and which ones it's better to just save the money and hire done.
Here are links to two books you should buy and READ before you commit to anything further, they will give you a good overview of SOME of the things you'll need to know -
http://www.residentialarchitect-books.com/ra-wf950.html
That one is the least expensive book I've seen that has enough info to be worth it - that site has others, but all are more money.
Then,
http://www.amazon.com/exec/obidos/tg/de ... ce&s=books
That one will explain more of the differences in construction, as well as cover some acoustics info, etc -
Another good thing to do would be to check out all the various pix of studios under construction at John's site, just click on the John Sayers productions logo at the top right of this page, then click on EVERYTHING there. I know you're not talking about building anything quite as involved as most of those, but for sound "proofing" the principles are the same - if it won't float, it won't stop sound.
Doing something like your project can be a great boost to your self esteem, or it can be a real downer, depending on how well you prepare first. If, after looking through John's incredible collection of information, you still want to go for it, we'll be glad to help as much as we can.
Just so you'll know, though - none of us has enough "spare" time to teach you how to be a carpenter from scratch, there's just too many things involved (including the actual "hands on" experience). That's why I linked those two books - I'd recommend FIRST reading everything on John's other site you can get your mouse on (it's FREE), and THEN if you're still hot on the idea get (at least) those two books. Do NOT, repeat NOT, go out and buy a bunch of tools that "look cool", until you've gotten familiar with what does what, and why you can/can't live without them.
Once you've done EVERYTHING above (assuming you didn't either change your mind or find a really good friend that's a professional carpenter), then I can show you what's DIFFERENT about studio construction, sound ISOLATION , and good-sounding rooms - the first of which is, don't EVER build a square room (25 x 25, for example), or one whose dimensions will divide evenly into each other - the Everest Studio book will go into that a lot more. And, since sheet materials like plywood and sheet rock come in even multiples of 4 or 8 feet, people normally build (in your case) a 24 x 36 building, instead of 25 x 35. Comes out even for more efficient material usage... (That's one of the hundreds of new bits of knowledge you're about to gain - cool, huh?)
I hope I didn't scare you off or sound like I was trying to - I'm only trying to point out that this type of construction is hard enough for experienced builders to understand some of the reasons for, much less if you're starting with a "clean slate" - Still, it's very do-able and your DIY mindset is one of the essential ingredients.
Welcome to the forum; now, go check out those links and let's get started... :=) Steve