Regarding the jargon, I suggest this: https://youtu.be/RIHA53SWO20

Thank you so much for your suggestions. I wasn’t even thinking about something like notion or baserow, so this is definitely a good idea.

On mobile I have etar calendar and davx5. It generally works pretty well, even if the sync is not instantaneous. I have a few problems with inviting people to events and sending the associated email/invitation, but it’s just a matter of how the SMTP servers are managed, just a minor thing

This is pretty much my setup. I use nextcloud as a calendar, but for to-do lists I am experimenting with Joplin, with a mermaid plugin for also mindmaps. I’d like to automate everything and have a all-in-one solution but it does not look like an easy thing so far