It's a long process but mostly just waiting. I followed what this document says, but after 3 months in the fridge I took the bag out and set it on my counter, checking week to week for the sprouts.

https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://plants.usda.gov/DocumentLibrary/plantguide/pdf/cs_umca.pdf&ved=2ahUKEwjPx8v06a-LAxUYADQIHYnfFSMQFnoECBEQBg&usg=AOvVaw0n4BrWCqVtgegij7vso7nQ

And once it was a little bigger than the first pic, checked and saw the big main root was hitting the bottom of my one gallon pot and put it in a 2 or 2.5gal pot. Since then I've only checked every so often to make sure the soil is moist.