Reading about Rails concepts is one thing. Using them in a real app is where they finally click.

In this series we'll build Study Flow , a small app where you:

create study plans and break them into topics,

start and finish timed study sessions,

get daily reminders and a weekly progress report by email,

watch your dashboard update in real time.

Each post introduces one Rails concept (sometimes two small ones), and the app grows a little each time. By the end you'll have touched most of what makes Rails 8 special: the built-in authentication, Hotwire, Solid Queue, Solid Cable, Solid Cache, Active Storage, Action Text, and testing.

This series is for you if you're new to Rails or a junior developer. You should know basic Ruby (classes, methods, blocks).…