La Miroiterie is the oldest squat in paris... its on blvd menilmontant, in the 11eme arondissement. they got lots of punk and hardcore shows there pretty often. they usually charge 5 euros or somethin, and the people arent wicked friendly in my opinion, but its def a cool place to check out and the musics great.
in marseille, in the south youve got to check out the CIRA... the Centre International de la Recherche de l Anarchisme. they just changed addresses and i dont know the new one, but if you look them up youll find them. theres a guy named Gilbert who works there. Really, really nice guy who knows his shit and will gladly hang out and talk to you about the sickest revolutionary badasses from way back and give you great suggestions for reading and such things. theres also a radical space tht i havent been to yet, but heard good things about, in marseille, called le seul probleme.
then, in the north if you head to amiens (not tht interesting of a town apart from a few rly great people and a sweet noise music scene), you should check out this venue called Acceuil Froid. they have sweeeeeeet bands, and its run collectively by a bunc of people. some of which are friends of mine in a band called Headwar. if you ever get a chance to hear them, dooo, theyre wicked fun.
good luck with it all! ill be back in paris at the end of march, and after tht around the south for awhile. you should hit me up if youre nearby