Have you ever heard the babbling of an angry ten year-old girl? She will go on and on, making very little sense as she runs her sentences together and talks until the runs out of breath. She will then get angrier because you could not understand what she said and the whole cycle will start again.
That babbling is how writing looks without punctuation. This sort of sloppy writing often appears in the comments section on news websites. Everybody has something to say, but very few say it clearly.
This guide aims to help you understand how to use punctuation correctly in your writing; your readers will appreciate the fact that you have taken the time to ensure correct punctuation and you will be able to rest easy knowing that your writing is the best it can be.