I am business dumb, but I have a very unique mix of skills I would like to turn into a side hustle. Needless to say, there is going to be a huge learning curve for me.

Sure, I could just sell 3D prints on Etsy, but I would rather focus on B2B type work with a more hands on approach than the Chinese print farms/PCB manufacturers. (I’ll start an Etsy shop for practice, but that particular market seems extremely saturated.)

So, if you have started a business before, what are some basic things that you wish someone had told you before you did? Are there good books or other references I could use?