Small update: I had my first proper lesson today (previous one was a taster, no real learning involved). I learnt how to trot, properly! I've been on a couple of treks in the past and they told me you have to move up and down with the horse, which I tried but it just didn't work. Anyway today the girl helping me told me it was like a 1-2 motion rather than just up and down, and it clicked, I finally understood! So it was a good day. Just need to keep practising though as I still pull the reins a bit too hard and I think I might have been annoying my horse