Adobe Acrobat Pro/Reader: Read Documents Aloud
This is a great tool for those who learn best by hearing. Listen and reading can also help with comprehension. The only requirement to be able to do this is that the document has rendered text. if you need to render the text through running character recognition, you can read how to here.
To have a document read to you:
1. Click View > Read Out Loud > Activate Read Out Loud
2. Click View > Read Out Loud, and then choose the option you wish. You can have it read to the end of the current page or to the end of the document.
Once the document is being read, you can access the same menu to pause, stop, or deactivate the reading.