To start with im only 20 lol
Words of wisdom, well basically my advice would be to just know your stuff. Depending on what your previous knowledge is and what you have done before will decide what you should be focusing on. If you have your PPL then make sure you know your PPL stuff well, if you only have your BAK or GFPT then make sure you know up to those levels. I have completed the first half year of Uni so I made sure that I was up to speed with what I have learnt.
For the interviews your best bet is to just stay calm and answer the questions as you go, there's no real way to 'prepare' other than what I said before. I didnt feel as if I was under pressure in any of the interviews and was quite relaxed, the interviewers were very nice!