There are two ways you can download my presentations and files, both of them are very simple.
Click on the dropbox.com link. This will take you to the link for my presentation, then you can easily click on the download button.
Click the slideshare.net button at the bottom of the presentation.
This will direct you to slideshare.net, here click on the save button.
You will then be asked to sign in to Slideshare, if you don't already have an account you can sign in easily with Facebook.
The presentation will then be downloaded!