<human>: Condense the text into a few key points

My brother has a laptop (passed down from me) that he cherishes. He's had it a few years and it was mine for a year or so before that, so it's fairly...outdated. He'd like to play games with me online and such, but it's such a bad machine he has trouble with starcraft brood war.

I have a desktop that I recently got as a gift from a friend, so it's beautiful for everything I ask it to do, ect ect. 

I'd let him use this computer and me use another desktop or something so we could play together, but I'm in college and occasionally need it for... well, documents and java and such. 

I'm regarded as the computer nerd in my circle of friends, so this is me swallowing a bit of pride to say "Is there any way for my brother to access and use my computer while I'm in class over the internet? I honestly have no idea what I'm doing when it comes to this."

A new computer for him would be an issue because of some family financial trouble NO DONATIONS OR ANYTHING PLEASE we're not too bad off, just... depressed.
<bot>: what should I do to let someone else remotely use my computer for online/offline games and/or internet browsing, which subreddit should this have gone in and what's the best way to put it there?