My husband is in the printing business and he needed to find a Fulfillment Company to fulfill a job for "Beauty and the Beast". Since I was managing a large building with some vacant spaces I told him we should hire a bunch of people and do the fulfillment ourselves, which we did.
Long story short we did the job, The Walt Disney Company was so happy with our work they started sending us work. I ran out the next day and did all the legal, filing the dba, obtaining a Tax Id #, opening a checking account and well lets just say the rest was history.
We grew so fast that we even bought two buildings in addition to a bunch of equipment. We were successful for almost 17 years and when the printing business starting changing due to the internet we closed the business and went a different direction.
I learned everything from starting this company, it was a lot of work with a lot of hours but I learned things you would never be able to learn by going to school.