Can strongly recommend Starting Strength, started out reading the book (written by Mark Rippetoe) back in January - started the program in February using the android app* as my guide. I feel better than I've done in years (I'm in my mid thirties)
Remember to eat well and make sure you get enough protein, otherwise it's hard to follow the program.
Starting Strength is a great program, but I can't understand how beginners are doing power cleans without any kind of guidance from a trainer. Power cleans are really hard to learn - it took me months of going to Olympic weightlifting classes to get even close to good form on them. How did you manage to learn this from a book?
Also, you need to be doing them on a lifting platform for the end of the lift, when you have to drop the weight all the way to the floor. Not too many gyms (in the UK, at least) seem to have these.
I did crossfit 2-3 times per week for 1.5 years around 7 years ago at a gym where there was a lot of focus on technique, so it's been a while, but I didn't start from scratch with regards to technique.
That being said, I'm sure I have bugs in some of the exercises, I try to work them out via. videos and focusing on technique before I put more weight on the bar.
All the gyms I've been to here in Denmark have lifting platforms, squat racks, etc. so that hasn't been a problem for me.
Remember to eat well and make sure you get enough protein, otherwise it's hard to follow the program.
* = https://play.google.com/store/apps/details?id=com.shabu.star...