Learn Joomla 4 Power Tips - Upgrading to Joomla 4

Upgrading my site was super easy. That's the advantage of mainly using core components.
Backup: 5 minutes
Upgrading Joomla: 3 minutes
Upgrading some extension post update: 2 minutes
Replicating the custom BS3 template in cassiopeia with css and a few layouts: 2 hours
Converting a jquery script to vanilla: 10 minutes