Slim, I'm doing great and I hope you're the same.
I wrote those lessons so that anyone who has the program could learn enough to do their design work and get a pretty realistic looking knife as the results. Photoshop is a complex program with ways to do anything you can imagine, you just have to learn the tools and practice. I don't think you could ever explore everything that PS can do, so you learn to do the things you need to do and then try to get better and better. I look at it like playing a video game only at the end you have something to show others besides a high score.
I also did those lessons for people that couldn't draw a straight line with a ruler, just let PS do all of the work. I did include on the last page a link to a very good source for Quicktime videos on how to learn the PS Basics for people who want to get more in depth with the program.