Need to combine pdf's into one file? Try http://www.pdfmerge.com/
Need to split pdf's into separate files? Try http://www.splitpdf.com/
Want to type or write on a pdf? Try http://www.pdfescape.com/
If you are a user of Google Forms but haven't checked them out lately, you need to! Google has added some fun new themes and added customization. You can now change fonts, background colors, and add your own image to the header. (Go to your drive, then Create -> Form)
On that note, any data that is collected in Google Forms ends up in a Spreadsheet. But I just discovered an add-on called "Save As Doc" that will take all of your spreadsheet data and turn it into a Google Doc. This converts your info into a much more readable format. (In your spreadsheet, go to Add-Ons -> Get Add-Ons, then search for Save as Doc)
I'm excited to be heading to a math classroom tomorrow to help him with some of the Desmos activities. Woo hoo!