All credits for this guide extends to spork who made it in the announcement thread. I think it deserves more recognition, so I'm guilty of copying and pasting his masterpiece
If people are unconvinced about how easy Bittorrent is to use... here's a quick tutorial for uTorrent. I use uTorrent just because it's VERY small size and easy to use. There's clients out there that are more complicated and what not, but this will be for uTorrent. It's very similar to how other BitTorrent clients will work though, the only difference is the installation and options.
#1) Go here and download the latest version of uTorrent.
#2) Save this file in a folder where you want it to keep it. It doesn't matter where, but if you want to stay consistent with how your computer works, then save it in C:\Program Files\uTorrent (make the folder yourself). If you have no idea what I'm talking about or don't care about having a dedicated folder for it, just leave it on your desktop. Just remember where you put it. If you move it later, run it again from that location.
#3) Click on the uTorrent file.
#4) You're done.
#1) Find a bittorrent link. It'll look just like a normal web link. For example this page is full of bittorrent links
#2) Click on the link.
#3) If you're using firefox it might give you a dialog like this
If so, then make sure uTorrent is the Open With and click "OK" If you had run uTorrent once earlier, it should put uTorrent as the default.
#4) It'll ask you where to save it. Just pick a location. You can watch it's progress
When it says it's done you can view it. You cannot do anything with the file when it's not complete though.
Note if you minimize uTorrent, it'll hide itself in your task bar, like so
Click on the circled u icon to open it. If you actually close uTorrent (it'll warn you), it'll stop all downloads and uploads. Don't worry if you accidentally do it. Just click on the uTorrent file (where ever you put it) and it'll continue where it left off.
Now, here's something you'll want to do that is not necessary, but trust me, you'll want to do it.
CAPPING YOUR UPLOAD SPEED
#1) Open up uTorrent (click on the file or a short cut to the file, whereever you put it)
#2) Click on Options->Preferences
#3) Click on Network Options and Under Global maximum upload rate.
If you have an insanely great internet connection, leave it as 0 or as high as 50-80.
If you have a decent cable/dsl connection, set it at 20.
If you have a cable/dsl connection that you're sharing then set it to 10.
If you have dial up or something pretty slow, set it to 5.
Why not set it to 1? Because the lower you set that number (with the exception of 0 which is actually the HIGHEST) the slower your download will be too. Bittorrent rewards people who set it higher.
That's it. Now some trouble shooting...
Why did it go to like 90% and then stop?
Because there's probably no seeder. That means no one that's downloading that exact thing through bittorrent has the whole file. Yes, that sucks and that's a big problem with bittorrent. It requires a person with the whole file to be also connected.
It's not downloading at all!
1) All the people connected to it are behind firewalls. If both people are behind firewalls, then you can't connect to each other. People who are not behind a firewall can connect to people behind firewalls and vice versa but two firewalled people cannot. Chances are though that at least ONE person connected is not behind a firewall and everything is dandy.
2) Someone is blocking BitTorrent. Some schools and some locations do this. If this is the case and that someone isn't you, then you're out of luck. You can't use bittorrent.
When I'm using bittorrent, it really slows my network connection down!
You're probably using all of your upload band width. That's why I said you'll want to cap your upload speed. See that section labeled CAPPING YOUR UPLOAD SPEED? Read it. If you did that already and it's still slow, lower that number.