Deano,
Nothing to worry about. It's quite straightforward and the A/G operators are very friendly. If you look at the three approach points N, S & W - W will probably be the first one you hit from Bristol. You can't miss Reading (but don't be above 1500ft when you get there) and if you look for two very large gas containers on the river in the middle of Reading, that's point W. At that time, call WW saying you're at point Whisky and request joining instructions/airfield info. From Whisky, there is a railway line bounded by hedges which heads directly to WW. When leaving W, get down to 1300 QFE and then prepare a standard overhead to circuit height of 800ft. Worry about your safety more than the noise abatement first time, land, taxi to the plane lines, don't hit FFF's Europa. Order bacon sandwich at bar. Simple.
Don't worry about the grass runways, they drain quite well.
Have fun