Have you tried working with the Descriptosaurus by Alison Wilcox (general Descriptosaurus and thematic ones)? The books are actually made for supporting creative writing for school children (ages 8 - 14) and their teachers, but it can be a great help for any (starting) writer. The books are full useful vocabulary and phrases, tips for describing the scenery and building tension etc. If you look them up on Amazon (or some other online book shop), you can look at the first chapters.
Are you a student in Sixth Form? I am currently writing a fantasy novel that is partly set in Wales, and I'm desperately trying to gather information about Y12. It's not easy, as I'm living in Belgium. Maybe you could help me out? I only have some very easy questions (about school and student life)