Beginner: Start Command a PDF?

I'm reading Learn SQL in 24 Hours by Ryan Stephens and I'm trying my best to not give up --

I've successfully downloaded Oracle and have access to SQLPLUS -- but the first directions say to create a table based on the supplemental downloaded material

Earlier in the book there was a link to the books website that had 4 downloads that are called tables.sql, data.sql and 2 bonus materials of similar names

when I download they are Pdf's -- now here's where I'm stuck

the directions say to use the following code to load the table into the database...
SQL> start c:\sqlbook\tables.sql

The issue i'm running into is that this (see attached photo) -- I'm such a newbie that I'm not sure if these directions are written badly or if I just didn't do something right (and yes, I voluntarily chose to learn SQL)

Any help?

Edit: Forgot Picture SMH

https://preview.redd.it/3ei0uobjw7xd1.png?width=607&format=png&auto=webp&s=81f57c04e71cda443a17c4bc6ec97e4a31bca153