How to read .awz ebooks on Macbook Pro (Mac OS X 10.6.8)?
I believe the easiest way to read a Kindle ebook on your Mac is to download Amazon's application for that purpose (either from their site or the Mac App Store). As Thilo points out in the comments, however, a DRMed Kindle title can only be read on the device which downloaded it, so moving the .azw to your Mac won't help. Instead, assuming this is a book you acquired from Amazon's store, you can download another copy and have it sent to the Kindle app on your Mac.

As for converting to PDF, .azw files are DRM-protected Mobipocket files. Assuming you can remove the DRM somehow, there are many resources online that can do .mobi -&gt; PDF conversion.