Hi! I'm a second year law student so I know a little bit. I'd say this year I'd start reading up about law and life in law, I did this 6th form before applying. I'd say 'letters to a law student' and then maybe reading some blogs. There are loads of movies and documentaries that are great for insight, don't trust Suits or How to Get Away with Murder!
I'm a Prime Student Ambassador so it's only fitting that I recommend that you get/use Prime Student, you can buy loads of the textbooks for cheaper and watch a bunch of the films on Prime Video. First 6 months free and 50% cheaper than Amazon prime if after that 6 months you choose to keep up with the subscription.
you can use my link amazon.co.uk/oxford1