The jdlawhon site is a great link - he lists most of the tools you'll need, although some can be substituted and/or omitted altogether. That tutorial is specifically at this link: http://www.jdlawhon.com/beltslide.html
But, there's a lot of things about this that are all about preference. For concealment type holsters, anywhere from 7-10oz is typical for pancakes while 6-7oz is used for iwb styles. I personally feel that 7-8oz is a perfect balance for me to create both styles, and I have come to that conclusion by trying weights higher and lower than that. Your mileage may vary.
I suggest hitting up your local Tandy and scoring a 7-8oz shoulder to play with. Nothing fancy, if it's on sale, snag it - I'd wager you won't spend more than $30 on leather. Work with it and see what you think. Follow the tutorials you've read and search this forum for even more. Be sure to post when you're done - I'm sure you'll get all the friendly comments and crtiques you need.
You've already found the best resource on the web for this, though.
Oh yeah, and WELCOME!!!