[Updated 3/24: Kindle edition now available.]

Did you know you can get PGAE for the iPhone? Many O'Reilly books are available as individual iPhone applications, wrapped in the excellent Stanza book reader. PGAE looks surprisingly good on the small screen, and it's only $5!

You can buy the Kindle edition from Amazon, and you can buy Mobi, PDF, and ePub editions directly from O'Reilly. The soon-to-be-released iPad supports ePub, and will support any ePub files you have already purchased or acquired elsewhere, and of course Amazon will have a Kindle app for the iPad

if you already have the Kindle edition. It's too soon to tell whether PGAE will be available directly from Apple's iBookstore, but it's clear there will be many obvious and useful ways to read it to the iPad.

You can also access PGAE on the web through Safari Books Online. If you're interested in an ebook edition, don't miss O'Reilly's Print+Ebook bundle.