They go super in dept about everything…..they take their time to show you what every part does, they show how to prep before engine removal and every little thing to do when removing the motor….they really only cover v8’s, inline 6’s and some 4 cylinders…they only work on rear wheel drive vehicles….I used it to rebuild a 5.0 302 small block for my truck, I had a lot of experience but this really fills in gaps that you’ll need….