Just download what you enjoy and keep it in whatever bittorrent program you use and keep that opened as much as you want. Especially for the first like month or so, when still building up your ratio it's a decent upload speed (fantastic compared to mine) but BBT is oversaturated on seeders so even then you won't be seeding nearly as much as you'd think.
It took me around ~50 torrents or so before I got to a point where I'm always on my max (100kb/s) upload speed.
After you got a stable ratio if you really want to help out, in the tracker you can search for ''bonus'' torrents that have particularly low amount of seeders compared to leechers. But that's pretty much the most you'll be able to do, and it'll pale compared to some of the monsters on this site.
About not having enjoyed the first 10 minutes, I'm sorry to hear that, but I saw your first post. And while I didn't get the feeling you were trying to ''1 up people on internet speed'' these forums are pretty vast, and we try to encourage to use the search function. We get a lot of... less intelligent people here (just check the Need Help? Ask Here! subforum, like half the threads started there just make me facepalm, and almost always from newcomers who don't even bother to check the wiki if it lists their problem). Frankly forgive impatience and get to know the community a bit more, most of the people here are awesome.