Check out Radio 4's 'In our time' web page, with fascinating discussions among academics. There are topics on maths. science, literature, history, philosophy and loads more - and you get to hear the most eminent professors in discussion. Definitely worth a look!
If you’re applying for a job, a university place – or any position that might require you to attend an interview, then it makes sense to think about the process as soon as you’ve sent off your application form. Don’t wait for the letter to arrive. It's good to be calmly preparing and doing some relevant research. Nothing extreme at this stage, but a few websites and newspapers are definitely worthwhile. This will really help build your confidence.