I live in Epsom and have lived around here most of my life - probably easier if you ask some specific questions as I could ramble on for ages.
General area is very nice in my opinion. Schools wise, Wallace Fields is fantastic, outstanding ofsted report but quite tough to get into.
In Epsom there are two primary schools, St Martins CofE school which is fairly mediocre and Stamford Green which I hear good things about. There are several private options too if this is an option for you?
Secondary schools are Rosebery - all girls, ex grammar school, gets good results. Glyn is the boys school, also ex grammar I think and pretty good results.
Blenheim/Epsom and Ewell High are the other schools in the area. Both pretty average.
Areas to avoid are Longmead and Watersedge which are the two council estates. There are some nice new builds by Horton Park, the area around Epsom Common is nice. The really nice big houses are on the roads leading to Epsom Downs and on the Woodcote Estate (behind Epsom Hospital).
If there is anything else you want to know just shout and I'll do my best to answer