Replacing computer parts

I do videos on my youtube channel, youtube.com/solanusdracon.  Mostly it's gameplay, but it's also lore.  I try to provide entertainment for anyone interested in those things.

Unfortunately, my monitor is starting to give out, and I am running out of storage space on my SSD and on my secondary storage drive.  I need to replace my parts, and I need help doing it (as I am unemployed and currently awaiting a disability decision)

Please help me out a bit, it would mean I could keep on doing what I do, making my 400 or so subs and whoever else watches my content happier in the process.  I just want to provide free entertainment!