I have been watching 365 videos daily to get myself educated for the migration. We will definitely be using Teams and Planner for collaboration, SharePoint for shared permanent files, and One Drive for individual files. We are also learning about the Power Automate app for managing some work flows. The information is endless, so educating yourself is key- I have found that our IT department is not equipped to train our campus users on this migration. Trello and Asana are more project organization software options- you can still use them with 365.