Just been having a quick look at how far the ground is from the metrolink station and it looks to be about a 5 minute walk.
I'm not 100% sure whether you come out of the station onto Market Street or Ashton Road (Google maps doesn't show the met line at all.) However, if you exit onto Ashton Road (as it looks like) then take a right and then a right again onto Market street and just follow it straight up. The ground is about 350 yards up on the left hand side.
If you are fancying a pint on the way to the ground then, as has been put on here already, The Beehive is on the left hand side as you walk up, and slightly further up towards the ground is The Kings Head, a Holts pub which is right on the corner of the ground.
Admission prices at Droylsden are as follows:
Adults £10.00
Concessions £6.00 ( senior citizens, students juniors 16-18 )
Under 16s £2.00