Help with Manga Projects?

Hello! So I've been translating Shoujo, Yaoi, and Shounen-Ai for many years and I can kinda typeset. I have been a part of groups before but now I just want to work on the projects I like in the time frame I like in a small team setting. So my main issue is I have tons of Manga that I've purchased but I don't know how to download the online purchases so they can be cleaned in order to be typeset. I also have no idea how to clean. If anyone can help with that, it would be great! And think about all the free Manga you'll get to read!!