In reply to MSY90:
It depends what you mean by easy. There isn't a very large proportion of Pembroke climbs below VS, if that's what you mean by easy.
I agree with the N Pembroke suggestion. For S Pembroke the area just west of Tenby, around Penally Firing Range is quite good for the sub-VS grades. If you have no sea-cliff experience it can be a bit daunting at first, so Giltar slabs which is easy to access and inspect before you ab down would be a great first sea cliff experience. This is the Vol 5 of the current CC series, entitled Pembroke Stackpole & Lydstep.
The most justly popular crag in S Pembroke for sub VS climbing is undoubtedly Saddle Head which is in the Vol 4 Range East (Vol 3 also confusingly called Range East). Saddle Head gets busy, but there are lots of really good routes to go around.
If by easy you mean sub-E-grade there's a lot more to go at. The Range East Vol 3 has a good spread of VS & HVS routes, with places like Crystal Slabs, Crickmail Point coming to mind.