Going loco having a slow computer

Our computer is performing very, very slow again. I think it is very clogged up with pictures and images. I am not sure, but ever since I downloaded some scrapbooking sets, our computer has no more free Disk C: space left. Perhaps the digital scrapbooking kits that I downloaded took up all the space, so I will have to transfer them. I wish I didn't extract any of them to be able to send them to my e-mail instead, or web folder. I have a lot of things to consider in order to clean up the crowded used disk space of our computer. Oh, too many jobs that I have to do. I can't even watch the remake of Marimar. Now I am missing so many episodes because each time I view YouTube, it would stop playing and freeze or pause in the middle of the clip. Oh, it is annoying; it gets on my nerve. And I have to constantly restart our computer if I want to watch it all the way. It sucks...ugh!