First boot Accept defaults. Sign-in to wifi Don't give apple ID (don't want itunes or icloud)
Dock autohide, move left, remove most things. Privacy Turn on firewall, Turn off location services, turn off diagnostics to apple, turn off crash data to devs Display Scaled, more space Keyboard Use F-keys, Modifiers: map Caps Lock to Command Touchpad Enable 1-touch clicking
Development:
Install Homebrew install ohmyzsh, ag, wget, redis, nginx, haproxy
Install Chrome set theme universe, do not sign in to Chrome
Install Oracle Java, IntelliJ IDEA, PostgresApp
Install node
Install Sublime Text, Camtasia...eventually
(Note: macOS comes with bash, ruby, python, perl and clang pre-installed).
Fun: Install Ableton Live, Steam, Battle.net, VLC, uTorrent
Most native Apple apps I avoid, prefering the Google equivalent. Contacts, Calendar, Notes, Reminders, Pages, Keynote, Photos all have Google webapp equivalents. However many have the ability to sync with Google, although that's usually more trouble than it's worth.