trains and stuff

Mrs F is heading to Colne from t' Isle of Man. Due to them being crap, the Steam Racket sail in to Birkenhead at weekends. What's the best way to work out train timetables and best prices and stuff?
She's thinking of going on Sunday 13th December, getting in to Birkenhead at 12:30pm ish.
She's thinking of going on Sunday 13th December, getting in to Birkenhead at 12:30pm ish.