They provide pretty clear and easy to follow training and nutritional plans. Of course you can find this info anywhere, but from all the diet/fitness based stuff I've researched over the years, theirs are just real simple and they work. Most people lose track of where they are going because things get too complicated and it isn't maintainable.
The training and nutritional plans also cater to basic trainers/newbies and more experienced trainers. I know they aren't perfect and I break their balls a bit over some of the myths and bro science some coaches preach, but it's light years ahead of any info I've read on here.
Typical diet advice I see on here; "Eat whatever you want, just lift heavy. Micro nutrients aren't important, fill up on toasties and milk".
Typical training advice I see on here; "Anything other than power lifting compound lifts are a waste of time".