Selsey is a small coastal town.  It has a very busy thriving High Street with a plentiful array of shops.  The car park to the beach is at the end of the High Street.  The local bus service is reasonable and it will take you to all the various local areas of interest.  There is a huge caravan site complex {West Sands} where you can rent [or buy] a caravan.  There is a cafe in the High Street as well as two restaurants and a fish and chip shop.  The beach is shingle so it is preferable to wear something on your feet.  It is a peaceful tranquil place, well worth the visit.