TITLE: Free resources to start learning Discrete Mathematics
QUESTION [5 upvotes]: Can anyone recommend good, free online articles or books to learn Discrete mathematics? When I google'd for them, I came across few resources..but don't know whether they are good to start learning with. It's better to know a tutorial or a book that get you started in Discrete Mathematics. Can readers of SE Mathematics can suggest a good starting point?

REPLY [3 votes]: The UVic Discrete Mathematics Study Guide is also good for concise notes on the basics:  
http://www.math.uvic.ca/faculty/gmacgill/guide/index.html