I’ve been a fan of the Kreg joinery system since the early noughties when I discovered it thanks to Norm Abram’s “New Yankee Workshop” television show on PBS in the USA. In general Norm used the system to build face frames for cabinets and other items requiring a tight and robust frame. I used it for my model railway layout boards. It has been a great tool and has worked very well in the 12 years I’ve used it.
As an introduction to pocket hole joinery it is useful and whets the appetite to get in the garage or workshop and get playing.