More detailed installation instructions

[juliaafnf]

Hi, I'm still a bit new to coding and couldn't understand the installation instructions even after looking up so many definitions and commands. I'm afraid of breaking something by trying to install this so can you make better step by step instructions on how to install this? thank you!

[juliaafnf]

I sort of figured out how to install it but I get an error:
Invalid commandline class : Text should be textbox.Text
Which is causing all sorts of other errors in the textbox files. How do I fix this?