“Good punctuation is crucial for successful academic writing. Many students’ essays use little punctuation beyond commas and full stops. But to be restricted to just two forms of punctuation mark, when writing your essay, is like building a house using only a hammer and a saw: you can do it; but not very well. By learning to use more, or all, of the available forms of punctuation you will be able to communicate and express your ideas, and arguments, more clearly.”
Learn about the available forms of punctuation in this Rough Guide to Punctuation prepared by The Learning Centre at the University of New South Wales.
For a little more humor, you may want to check out Mashable’s 16 Unfortunate Misuses of Punctuation.