Have a look for the guide books here https://www.climberswa.asn.au/climb/guidebooks/. And look at the online guides for Western Australia here https://www.climberswa.asn.au/climb/online-guide/.
Best spots for climbing in Perth are Stathams Quarry and Mountain Quarry, Churchmans Brook, Wungong Valley, Darlington Boulders and Avon Valley. Further afield down south is Willyabrup off Margaret River and then there is the West Cape Howe, Albany and Porongurup’s region. Up north is Kalbarri.
CAWA runs a number of events and you can see what’s on on this website, how you can join up with other climbers etc.
Western Australian sport routes use bolt plates in many cases along with ring bolts, so you may need to invest in +/- 8 bolt plates in addition to your own gear. Summer here from December onwards is hot and outdoor climbing is usually best in the early morning or somewehere in the shade late afternoon.
Go onto the forum when you arrive to find a climbing partner or drop us a line at [email protected]