The free online courses, “virtual work experience” by Nottingham and Edivet courses by Edinburgh. There is a not too expensive basic anatomy and physiology book by Aspinall which I feel could be a nice bridge between A Level biology and first year vet med, but don’t feel pressured to purchase anything (I’m sure you could get it cheaper second hand too). For articles look on BVA, VetTimes etc. Joining social media groups to get a feel for “lingo” and typical owners etc is good too, e.g. on FB groups like pet/exotics vet corner, the lambing club, ladies who lamb, chit chat and tack etc, and there are lots of good veterinary accounts on Instagram and tiktok and the like. I do feel like while all these are good to do in some spare time (the book could wait until after you apply in fairness) nothing really replaces actually doing practical work experience though.