Conversation- Are you good at ...?

A-Are you a good swimmer?
B-Very good it´s good fun
A-When did you learn?
B-8 years ago, when I went with my brother to the swimming pool
A-How did you learn?
B-The first time my brother taught me and when I realised I  liked it  I started to go every weekend
A- Did you find it easy or difficult?
B-I found it easy because I learnt  quickly