Help, please. How does one "RSS"?

I've never used RSS before and I'm not entirely sure what it is. But with all the new sub blogs and everything I would like an easier way to keep track of them instead of a million tabs and such. I've heard RSS does this, right? How? With what?

I heard Feedly is what the cool kids are using these days, but the website did not help. I googled "how do I use Feedly" and got linked to a Feedly blog (which is NOT linked from the main page, btw) but it did not help that much. The main page doesn't have any "About" or "FAQ" and frankly, that's just poor web site design so now I'm mad at them.

*Sigh* How do you internet?