Hold the Home button down and tap the screen. Continue holding Home for a second or two. The screenshot files are saved to the root of USB storage when tethered to a computer.
New PDF Features
PDF hyperlink support
PDF bookmark navigation ('TOC')
Double tap to zoom to fit to width mode. Then tap to autoscroll to bottom and to next page or column. This works with layouts with multiple columns also (note that tables seem to confuse the navigation, so it is not perfect).
Navigation on Home screen
In addition to swiping to move to the next or previous page, tapping on the 'Page x of y' label brings up a dialog that lets you jump directly to a given page, or to titles starting with the letter(s) you type in (ignores articles like 'a' and 'the'). In the latter case it changes the sort order to By Title. If sort Order is By Author, the dialog lets you specify the starting letter(s) of the Author.
Workaround for Highlighting
Currently, you can only highlight text that appears on the screen when you create the highlight, so if what you want to select begins or ends on an adjacent 'page', you have to repaginate the content in such a way that everything you want to select is on screen. None of the ways of doing so are very pleasant, but at least it is something you can do (Nook Touch has the same limitation, but there are fewer options for addressing it)
- Select a smaller text size. With the start of the desired text displayed, select successively smaller text until everything you want to highlight is displayed is shown. Then select it. Obviously this will not always work, depending on how much text you want to 'pull,' but it is the easiest tactic if you have a couple of sizes smaller than what you typically read with, and you don't need to pull much text.
- Make a guess at the location where your text begin, and use Go To to jump there. Note the current location, go to the next page and note that location, the location to jump to will be between these two and just make a rough guess. This will repaginate to bring more or hopefully all of your text onto one screen. You can of course temporarily reduce the text size to enhance this effect.
- derive the exact starting location. Select the word just before the text you want to select. When the popup appears, choose Add Note and type in any letter. Then use View Notes & Marks, find the note you just created, and select it. This will repaginate so that the Note is the very first thing on the page, followed by the text you want to select. Delete the Note by tapping on the little number and choosing Delete Note. Then create your highlight, again reducing text size if necessary. See, that was simple!
I have a couple more but need to add them later.