for sport climbing in collbato here is a link to all the topos
http://kpujo.com/catala/ressenyes/collbato/pagines/base.html#
theres also another new guide for montserrat south, but its in spanish unfortunately.
el vermell is kind of a classic area for sport and also can jorba, lots of crags there and multipitch routes aswell, all easily accessible from el bruc, the next town up from collbato, theres a lot of multipitch info on the web, but not knowing the area it might not provide of much use. They´re usually just topos with no access info etc. depends on what time of year your coming you could also head to the north side. the sport is a bit higher grade wise, buts lots of easy multipitches on magdalens inferior and el gorr frigi.
basing yourself in el bruc if you can is a good idea.
heres my email, shoot me a message if you want any more specific info.
martyn.lewis01@gmail.com