Genetics Textbook

On my degree, for some strange reason, the first year genetics course was cut a few years back.

We therefore go onto do second year genetics courses having done nothing in the first year, and naturally people struggle. I have been told that to have any chance I need to read a good genetics book over the summer.

What would you recommend?
My current genetics knowledge is basically A2 Biology, and I will need to bring this up to a level 2 standard. But I want something that isn't going to completely destroy me! xD


Thanks for any advice.