Are you using MorphOS to get on this forum?
In no particular order:
MorphOS Library - Check out the TUTORIALS links on the main page! That is the best way to get around the system a bit.
Applications/ Wayfarer, Iris, MPlayer
On Wayfarer, visit MorphOS Storage
MorphOS Storage and look at all the software you can install. One nice software (written by Papiosaur) that you should find is "Easy To Install". It browses MorphOS Storage and maintains a list of available and installed programs on your machine.
Papiosaur has written IPP-Print and it is available on MorphOS Storage. You can print to modern printers without all the setup hassle for vintage supported printers. He has a scanner utility and LOTS of other nice productive software for Morph that will make your mini quite useable.
Bluepill is a Discord client that will give you access to modern chat on your mini.
MTerm is a BBS utitlity that is really nice if you are into that scene.
You can tailor RSS readers to get news from feeds you choose.
You can make your own ICONS which is fun!
Aminet.net also has lots of programs for Morph likeTwinVNC0.8beta if you want to VNC to another computer (which is nice for stuff like Samba file sharing or modern web browsing from your Mini).
I liked the command line help tool "Chelp". It needs an internet connection to work typically, but you can explore shell commands you may find valuable. I use WakeOnLAN to wake up my linux box for VNC / Samba shares by tossing the wakeonlan command in my network-startup file.
Snoopium is a tool that you can use to monitor program activity in the background.
The SDK is nice if you want to tool around with programming.
SDL will help with some modern software implementation. (It will likely be a software requirement for something you eventually run).
Games! If you have the 64MB graphics memory, have at it! Settlers2 is pretty cool but it costs a bit of money.
MorphUAE will get you into the world of emulating any amiga games and programs that Morphos doesn't have the "chips" the original Amiga hardware had.
There is a ton more to list, but those are some of the things I have done recently. (besides collect powermacs to restore and put MorphOS on : )
-EvX