If I review a book, an app, a class (for some reason) or anything that isn't both easily accessible through the web and free, I'll tell you what I think of it. That way you can use my opinion to inform whether you want to expend the time, effort, and/or money to acquire it as well. (Who knows, maybe you don't respect my opinion and you'll only buy things I hate.)
I'll keep a list of these reviews and a basic rank here. Most of these are links that will take you back to the original page I reviewed them on, and the full text of what I had to say, not to anything like an Amazon page. I'm fairly confident that you can handle that part if you want to.
This one goes up to 11- Dorothea Brande Becoming a Writer
10s- If I didn't buy this, I would wonder if I hadn't been taken over by a pod person. I would start to watch me very carefully when I slept.
9s- At twice the price this would still be a steal. Simply put: find a way to buy this.
Strunk and White. The Elements of Style
8s- A phenomenal value. The kind of thing I write into my budget right after food but before electricity.
7s- A Great Deal. Unless you are wondering where the next rent check is coming from, this is a must buy.
Stephen King On Writing
6s- A good deal. Pat yourself on the back after this purchase and say, "That'll do, self. That'll do."
App- Level Me Up
5s- You get what you pay for and you pay for what you get. An even value.
4s- If you have money to burn--sure, why not? If you found it on sale at 1/2 price books, give it a shot.
3s- Don't bother
2s- It's probably worth it to pay NOT to have this
1s- I would risk fighting Morlocks for the chance to go back in time and warn myself not to waste money on this tripe.