In reply to j_duds: theres millions to go at in the area, probably amongst europe's best spots. theres quite a choice of guidebooks too. depends where youre going, if youre going to be moving around then the Rockfax guide is probably ok but its quite out of date and i think only includes very limited info on some areas like Margalef or Montsant.
i guess it also depends on how long youre going for, if its a week or 2 then Rockfax should be ok. if any longer and concentrating on one area then id opt for the local guide though you could struggle with directions / area info if your spanish is non-existent.
wrt Margalef, yes i think theres been a lot of activity there over the last few years and it seems to be quite in fashion. certainly, there are some very cool spots there (check out the extras section of Dosage V and youll see Daila Ojeda on a great looking 8a/+ at Margalef, El Faustigador or similar). you can get the local guide (very simple affair) for 10 euros or possibly less at the refugio in Margalef - id say if youre going to spend time there then you definitely need to buy it.
you have to go to Siurana when youre there, its spectacular with some amazing routes: Can Piqui Pugui, El Pati and L'Olla are brilliant sectors.
local / other guides im aware of:
Arboli - cheap and simple (white pages, basic topo with names - same style as Margalef guide)
Siurana - simple, not black and white but not far off, and comprehensive but no descriptions or stars and the topos are quite abstract. worth having if youre staying there for a while
Montsant - new guide just out earlier this year, full colour and comprehensive. looked good in the shop
maybe best to get there and see how you go / what you think and where you want to concentrate on, you can always pick up guides when out there. as for rope, i think youd be fine on a 60 so a 70 will be fine for sure.
have a great time!