These are the text books I recommend for people when I am tutoring. These are particularly useful if we are doing online tutoring.
National 5 Biology
Leckie and Leckie Student Book and Success Guide
National 5 Chemsitry
Leckie and Leckie Student Book
National 5 Chemistry - Leckie and Leckie Books to get: Student Book Success GuideHigher Biology
Hodder Gibson - James Torrance
Authors: Clare Marsh, James Simms, Caroline Stevenson, James Torrance, James Fullarton
Higher Human Biology
James Torrance (May 2019) - Hodder Gibson
Authors Clare Marsh, James Simms, Caroline Stevenson, James Torrance, James Fullarton
https://www.hoddergibson.co.uk/subjects/science/products/higher/higher-human-biology-second-edition
Higher Chemistry
https://www.amazon.co.uk/Higher-Chemistry-Complete-Curriculum-Excellence-ebook/dp/B084GHJF89
Advanced Higher Biology
Bright Red Book (MAKE SURE TO GET 2019 or later edition)
https://www.brightredpublishing.co.uk/shop/cfe-advanced-higher-biology
Scholar book
https://books.scholar.hw.ac.uk/books/advanced-higher-biology/
Advanced Higher Chemistry
Bright Red Book:
https://www.brightredpublishing.co.uk/shop/cfe-advanced-higher-chemistry
