Remove Printing Restrictions and Passwords from PDF Files

Many students these days buy their textbooks in electronic, PDF format. The main advantage of this, besides price, is that the PDF can be carried on iPhones and laptops, so we have less junk to carry throughout the day.
Unfortunately, most of these e-books have restrictions on how many pages from the PDF, if any, can be printed, and forget copying any text from the PDF. So, no real studying, with a highlighter and notes in the margins, can ever occur. At least, not without breaking the restrictions on the PDF.
A Web site exists to break all the restrictions—from print limits to passwords—imposed on PDFs: FreeMyPDF.com.

First, click the Choose File button and select the PDF from which you want to remove restrictions.

Then, click the Do It button.

You are then prompted to save the new, free-of-restrictions PDF to your computer. Choose a location for your new file, then open it and use it however you like!
There are a few restrictions for FreeMyPDF.com. First, you must be able to view the PDF without entering a password for it to help you.
Second, there is a file size limit of 7MB. Finally, they ask that you not use the site to do anything illegal. They do not elaborate on what they define as illegal (or immoral), but they do not take any responsibility for your PDF-freeing activities.
For the documents we tried, FreeMyPDF.com worked like a charm. The file size restriction was our only real complaint.