How Do Delegates Work?

I'll do my best to explain what I understand of it to you. Each state gets so many delegates and each party does it differently for some reason I don't understand. For most of the states the delegate count is based on the vote count. Some states have "winner take all" and other split the delegates according to the vote counts. These are the delegates that will go to each party's convention this summer where the nominations will become official. The Democrats need a total of (I think!) 2025 delegates for the nomination. Now, here I get a bit confused, but along with the delegates that are earned through the votes there are what are called "Super Delegates" who are office holders, such as state or U.S. Senators, Governors, current and former national party chairmen, etc. While the delegates that are gained through the primary elections or caucuses are committed to the winning candidates the Super Delegates are not. From what's happened today for the Democrats it looks like it may go all the way to the convention. If nothing else, it looks like my state of Pennsylvania's primary will actually mean something for the first time in all the years I've been voting...woo-hoo!! I hope this helps a little. Annie