I am in the "my info" screen and my spouse's first name is not showing. There is not even a box to enter it, only a middle initial and last name. Is this normal?

There should be a section to enter the spouses first name, last name and birthday.  See the screenshot below:

You would have entered their first name when you entered your name and picked Married and filing together.  It  will open a box for their name.  Go back though and edit YOUR name and keep going.