Expected behavior

Hi there,

Just getting started on the MDB tutorial for the corporate website and I am having trouble installing Gulp. I downloaded Git BASH and opened the terminal, following these directions, but the installation isn't working:

"1. Open the Git BASH terminal

1. Type:

npm install gulp@3.9.1 -g

...and click Enter. "

Actual behavior

I tried: "npm install gulp@3.9.1 -g" and received the message:

"bash: npm: command not found"

I also tried:"sudo npm install gulp -g"and received the message:

"bash: sudo: command not found"

Thanks!!