The golf went through it's MOT yesterday

(first time pass) with three advisories;
Rear brake pipes (both sides) slightly corroded and play in steering column lower bearing.
I was aware of the play in the steering column but haven't looked at the cause yet so it's good to get a free diagnosis!!
Question is how easy is it to do? Anyone here done it. It's not urgent but will need doing before the next MOT i guess....