Fortunately, taking screenshot on iPad is very easy and similar to taking screenshots on iPhone or iPod Touch. You don't have to install any special screenshots taking software, just go with these simple steps:
Now is the time to copy the screenshots from your iPad to the PC or Mac. There are few possible ways. You can send the screenshots via the Mail app for example.
Sending the screenshot via the Mail app in your iPad is very easy, go this way:
So, as you can see, taking and sending the screenshots from your iPad is very easy.
Updated: June 20, 2010: After installing the newest iTunes 9.2.x to my Windows 7 powered computer, I have found that there is very easy to access the iPad's internal memory with taken screenshots. Just use the Windows Explorer, click the Computer and the iPad shortcut.