Hi
Get a copy of Western Cape Rock, its quite old now but it has photo's of most of the crags and most of the routes. There is not much easy sport climbing at Rocklands (less than 10 routes under grade 20 I think). Routes to climb:
Rubic's Cube 18
Cattle Rustler 20
The Arete 21
Orange Plasma 22
All 5*, all well worth an attempt.
There are a bunch of new, easier routes on a crag called the Bastille, which is not in the Western Cape Rock guide, not sure where you would find an RD, try the
routes section of this site