TL;DR: Just here for Browsersync setup? Skip to the steps.
I’m always looking for ways to reduce the time between saving a file and seeing changes on the screen.
When I first started working with Drupal, back in the day, I would ftp changes to a server and refresh the page. Once I found Transmit, I could mount a remote directory locally and automatically save files to the server. At the time, my mind was blown by the efficiency of it. In hindsight, it seems so archaic.
When building an event management application recently, we ran into a number of time zone related issues. For example: two logged in users could see different times for the same event. Here's how we fixed it (and all the other annoying bugs we found along the way).
A recent project involved a large number of nodes, each with a menu item. The menu was hierarchical with three levels. Each node page needed a link to the previous and next item.