Hey there!
It's a great and powerful synth. You can do everything that is known as classic synthesis (including some West Coast applications) with it and the patch bay opens it up for infinite explorations (and interface into Eurorack).
I would start exploring some droning sounds (open up Attenuator 2), play with the oscillators and the filter, test how far you can go with the Brute factor (hear how the resonance reacts?), test some FM, use the noise, use some distortion and/or fuzz, feed the sound back into the Minibrute 2S (you may need a booster for that), etc. Then, start experimenting with modulation (LFO and envelopes) targeted at filter, pitch, amplifier (remember to dial back the Attenuator 2 knob).
The sequencer (all 3-4 channels depending on how you count) is awesome and very playable if you wanna compose "melodies".