In reply to Oogachooga:
Don't be completely deterred from smearing, even though it's near frictionless. A small slit or nick in the slate can be a legitimate toe smear (I like to call it smedging) which will help you gain ground on some of the harder routes. If you're climbing in the lower sport grades, usually 5 to 6a, you'll find lots of meaty ledges where the only difficulty will be high stepping and mantelshelves which won't trouble you if you have a basic flexibility. Around 6b and onwards, you'll be greeted by long reaches, dodgy smears, tiny ledges and sidepulls so good footwork and bridging skills will come in handy. Australia is a great introductory area with great routes like Orangutan Overhang (6a), Gadaffi Duck (6b) and Looning the Tube (HVS).
The second time at Dinorwig, we saw some guy panicking and swearing at his girlfriend on belay because he couldn't raise his leg high enough to reach the ledge before the chains - a ledge about knee height. It was hilarious but please don't be that guy! Be kind to your belayer. Also watch out for loose rock on the peak of each level; you could quite easily dislodge some and send it careening down onto some poor f##ker below, The Omen style.
Happy climbing man. Hope you get the slate bug and bag yourself some classics!
Post edited at 21:34