By the way, the interface on the official program is rather simple, but it does kind of assume that you know what's going on and you understand how you're supposed to use Bitcoin.
If you take a few looks at it and realize that you're not quite sure what's going on, I'd encourage you to check out some of these resources:
-The Bitcoin Wiki: https://bitcoin.it/wiki/
Though the wiki has grown more and more over the months and isn't always as organized as it should be, the answers to your questions can probably be found somewhere there.
The Bitcoin network is quite open. While the program you can download from bitcoin.org is the way that many of us get access to the network, there are other ways of doing so. MyBitcoin is an example of this. It's simpler to use that the official client, although it doesn't have as many features. You may find that you are initially more comfortable with using a service such as MyBitcoin rather than the main client.