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PDF Files (Adobe Acrobat)
This is the most common format for ebooks.
CHM Files
Many ebooks appear in CHM format.
To find out more about how to read a CHM file, click here.
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DOC Files (MS Word)
Microsoft Word Files
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Sometimes you can find books in this format.
RTF Files (Rich Text)
Sometimes you might find books in this format.
TXT Files (Plain Text)
When all else fails... try this.