The iPhone 3.0 OS may only be available as a beta for developers (and friends of developers), but there's still plenty of tinkering you can do to get the 3.0 OS experience this weekend.

• How To: Fake the iPhone 3.0 OS On Your iPhone Today
What everyone can do is check out our directory of iPhone apps—both legit App Store apps and unofficial jailbreak software—that already provide the iPhone 3.0 OS's major feature additions. Copy and paste, tethering, running apps in the background—we've got almost all of it covered.

• How To: Install Unofficial Apps on Your iPhone 3G or iPod Touch, Easily and Safely
But first, you'll want to jailbreak your phone. And thankfully, we have a detailed guide for that too. Jailbreaking unlocks the wide world of Cydia, where you'll find most of the iPhone 3.0-related features covered.

• How To: Enable 3G Tethering in Your iPhone 3.0 Now
And finally, if you've cozied up to a dev and gotten them to register your iPhone's ID as a beta tester, here's how to test out iPhone 3.0's built-in, official tethering solution to use your 3G connection on a laptop.

Happy iPhone hacking everyone, and have a great weekend!