The release of iBooks Author brought criticism several weeks ago that the license agreement forbade users from exporting PDFs to be sold outside of Apple's own store. But Apple clarified things this week by stating that the restriction is only for the iBooks format, which can only be used in iBooks anyway. iBooks Author can be used to produce PDFs that can be sold anywhere, and even iBooks-formatted files that can be distributed freely anywhere.

Apple continues to push the new feature of Lion Internet Recovery to more Macs. Many 2010 models received a firmware update this week that allows them to boot using firmware, connect to Apple servers and install Lion onto an empty hard drive. This functionality is needed as Lion does not come on a DVD like previous operating systems.

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In Lion you can use Mission Control to see the most recent documents opened by the current application. With the application at the front, use Control+down arrow to bring up Mission Control in Application Windows mode. You can also Control+click on the Mission Control icon in the Dock and select "Show Application Windows." In addition to seeing all of the open windows, you will also see a list of documents at the bottom of the screen.

Learn how to take multiple RSS feeds and view them all on one page in Safari. You can create your own custom page of news from sources you like to read. You can also search this page to find articles to read.

You can use QuickTime Player in Lion to edit audio files as well as video. You can trim down the audio, getting rid of unwanted sections at the beginning and end. You can also use the same technique to divide an audio file into several parts.

Take a look at the different parts of the Finder window like the Toolbar, Status Bar, Sidebar, and Path Bar. You can show and hide these elements, as well as customize them and what appears in each one.

Paper Monsters is a beautiful side-scrolling platform game. The controls are very natural and the gameplay is pretty deep. Give it a try.

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As a new iPad 2 owner I was rooting around the Web to see what help resources are available. I looked at cases, software reviews, and hardware accessories. What I found are a lot of photos of people with their heads bent down in an odd position while using their iPads. I thought that doesn't look comfortable!

As I mused on ways to hold the iPad in a more comfortable position, I wondered if anyone had noticed the odd way people hold their necks while using the iPad. Lo and behold, I found a Harvard study quoted on the LA Times web site. The study, "Touch-screen tablet user configurations and case-supported tilt affect head and neck flexion angles" found that positions that users engage in while using any tablet contributes to excessive head bending which results in large muscle strains. These large muscles involve the neck and upper back and affect posture while sitting or standing.

The small study notes that the position in which you hold your iPad does affect how you feel:

Higher display locations lead to decreased head and neck flexion that approach more neutral postures; while lower gazes lead to increasingly flexed postures which are associated with an increase in neck extensor activity.

We thought that instead of writing a book on Lion, why not do what we do best and create videos! So we've created The Video Guide To Lion. We put together 20 videos with more than 2 hours of instruction, and made it super-easy to get by putting it in the Mac App Store.

This is a great way for beginners to get to know Mac OS X Lion, and for casual users to dig deeper into the features. The videos are unique, not something that can be found anywhere else. The app lets you jump easily from video to video and you can resize the window for better viewing, even going full screen.

Even if you are proficient in using OS X, you may want to consider recommending this to friends as a good way to jump in and learn more.