The best way to learn about bitcoin, is to jump in and get a few in your “pocket” to get a feel for how they work.
Despite the hype about how difficult and dangerous it can be, getting bitcoins is a lot easier and safer than you might think. In a lot of ways, it is probably easier than opening an account at a traditional bank. And, given what has been happening in the banking system, it is Make money with bitcoins safer too.
There are a few things to learn: getting and using a software wallet, learning how to send and receive money, learning how to buy bitcoin from a person or an exchange.
Before getting started, you will need to get yourself a wallet. You can do this easily enough by registering with one of the exchanges which will host wallet for you. And, although I think you are going to want to have one or more exchange wallets eventually, you should start with one on your own computer both to get a better feel for bitcoin and because the exchanges are still experimental themselves. When we get to that stage of the discussion, I will be advising that you get in the habit of moving your money and coins off the exchanges or diversifying across exchanges to keep your money safe.
What is a wallet?
It is a way to store your bitcoins. Specifically, it is software that has been designed to store bitcoin. It can be run on your desktop computer, laptop, mobile device (except, as yet, Apple) and can also be made to store bitcoins on things like thumb drives. If you are concerned about being hacked, then that is a good option. Even the Winklevoss* twins, who have millions invested in bitcoin, put their investment on hard drives which they then put into a safety deposit box.
*The Winklevoss twins are the ones who originally had the idea for a social networking site that became Facebook. They hired Mark Zuckerberg who took their idea as his own and became immensely rich.