Have you ever face any problems opening pdf files? I know lot you use acrobat reader to open pdf file right. I also that tool too untill i found this free software and lite which can read pdf files easily. Right now i'm introduce to you foxit reader. Since foxit reader is freeware and lite it can save your time opening pdf file compare to acrobat reader.
The Portable Document Format (PDF) is the file format created by Adobe Systems in 1993 for document exchange. PDF is used for representing two-dimensional documents in a device-independent and display resolution-independent fixed-layout document format. Each PDF file encapsulates a complete description of a 2-D document (and, with Acrobat 3-D, embedded 3-D documents) that includes the text, fonts, images, and 2-D vector graphics that compose the document.
Foxit reader's interface also quite same with acrobat reader so i'm sure you will having so much problems using it. You can here for free or go to their official website foxitsoftware. Enjoy!!
