My alpine strawberries became weeds in my garden - they self-seed and grow everywhere.
To germinate the alpine strawberry seed, just sprinkle them on top of moist peat moss based soiless mix and patiently wait. I usually get ~25% germination without doing any additional tricks.
I'd suggest to wait for a few months and start them in late winter/early spring. They can be transplanted before the last frost.
Tania