You guys are amazing, thank you all SO much for all the tips and confidence boost!
I've managed to get hold of the books however they are my boss' old books and they are around 8 years old (just so I can have a flick through them and see what we're talking ahout), it does seem daunting when you look at it at first but you've all reassured me very well so I'm feeling more confident!
Based on all of your advice, I'm going to crack on with the books and just go with it!
Thank you all again for taking some time to clarify things for me, I'll definitely be taking the advice to move forward!
All the best!!!! 😊