Second-hand comics

Hello!

I have decided to invest in French-language comic books in order to improve my French. (I don't know if this is a good idea - I will see. Given my interest in comics, it makes sense at the moment). Since I do not know the French-language comics world I would like to start by buying second-hand books, so that I can try out a variety of books to see if I like them and if they help my language skills.

My questions:
- Can you suggest any second-hand bookstores that sell comic books in Brussels?

- Can you suggest any specific titles for someone newly entering the world of French-language comic books?

Thanks in advance!