Hi Richard. I know, it can be bewildering at first! I started like you with no experience a few years ago but take it from me,you will pick it up bit by bit and start getting the results you want. As for guidance, it's the way of the world now and you really do have to go looking for what you need. There's plenty on youtube and on Presonus' own site as well as loads of other sites... loads of guidance for the absolute beginner. For example, look at these vids:
https://www.presonus.com/videos/player#Recording-in-Studio-One-Made-Easy-Introduction
Relax, chin up and persevere... you'll be glad you did. Good luck.