When browsing to a csv file to import, I select the file, select open

I'd definitely love to help you here in the Community, jbstoner-gmail-c, however, I'm a little bit confused.       

To do more digging into this. Can you please provide me with some additional information on your inquiry about importing CVS files, or did you encounter an error message while importing a file in QuickBooks? I'd be happy to provide you with the exact solution you need.   

I'm adding a few related articles below to guide you further with importing transactions: 

• Manually import transactions into QuickBooks Self-Employed 
• Add older transactions to QuickBooks Self-Employed

Also, each time you put transactions into QBSE, you need to categorize them. This will let the system place them on the correct line of your Schedule C form. You can refer to this article for the complete details: Categorize transactions in QuickBooks Self-Employed. 

If you have other concerns for QuickBooks Self-Employed, please reach out back to me again. I'll be right here to help you complete your tasks. Have a nice day!