Stating the obvious, but…
Get an iPhone. Use Prey and Find My iPhone. Use True Caller. Use SwiftKey.
Get a Macbook Pro. Make Dvorak your keyboard layout. Make an encrypted file system on your laptop.
Use Telegram, Firefox, Vienna RSS, Pocket, and Wunderlist.
Use Duck Duck Go for search.
Install Pocket Casts and listen to an unhealthy number of podcasts.
Use iTerm2, mosh, mutt, zsh with oh my zsh, emacs with prelude and jed if you want something light.
Learn a photo management tool like Aperture or Lightroom.
Learn to code Python, use Django to build web apps and APIs. Get PyCharm and PyCharm Edu.
Learn Linux, run Ubuntu or Debian.
Run your own email server, don’t use Gmail. Try to avoid “the cloud” as much as you can, this includes things like iCloud.
Make regular off-site backups. Delete Facebook and Instagram off your phone, forget about Twitter.
Get a personal server at Linode or Digital Ocean.
Host your own personal homepage and blog, use WordPress. Write about interesting things you do.