THe first thing you want to do is complete the tutorial.
Then focus on selling just enough in the store to buy materials for your first wholesale
once you complete your wholesale, buy your materials for the largest wholesale order you can afford.

Now that your completing the whole sale orders, continue to expand your machines to 4, and hire the mechanic and factory stocker, add a pallet near the door. this allows you to just run along the machines and choose what to make, buy materials and load your truck. Let the mechanic and factory stocker do the menial chores for you (the automation engineer is an expensive employee to avoid for now)