<human>: Can you summarize the given text in a few sentences?

Blatant throwaway here. I've got an interview midweek for an assistance position, and I'm starting to shit bricks that I don't know enough for what I'm applying for. Training is apparently provided, but of course a general basis is needed to understand the training. I've always been that guy who fixes things for people, but I'm getting the nasty feeling in the pit of my stomach that it isn't enough to impress at an interview, despite being told by everyone (IT qualified or not) that I'll be fine. 

**For those in the role currently, tell me of your experiences. For Team leaders and Managers, what would you ask in an interview?
<bot>: Got referral, submitted CV, have interview for the best opportunity of my life. Shitting bricks I don't know enough to come across competent.