How to Change File Permission From Read-Only to Read-Write on a Mac. The Mac OS X Sharing & Permissions settings allow you to change who can view or edit certain files. Changing a file from read ...

How to Change Read Only Files or Folders. Making a file read-only in Windows means you or a colleague are less likely to delete or change it accidentally.

Think you're stuck using only Amazon's Kindle format? Think again. Here's how to convert ebook formats, giving you more control over your digital library.