Here are some of my favorite productivity apps/websites:

To-Do List Manager: Nozbe (https://nozbe.com)

Document Manager: Evernote (http://evernote.com) used with the ScanSnap IX500 Series Scanner (http://amzn.to/2b6R6NU)

Social Media Scheduling: Hootsuite (https://hootsuite.com) and Hopper (https://www.hopperhq.com)

Calendar: Fantastical (https://flexibits.com/fantastical)

e-Mail: AirMail (http://airmailapp.com)

Note Taking (on iPad Pro with Apple Pencil): Penultimate (http://apple.co/2bor5Y1)