$ touch '/tmp/test file'
$ scp localhost:'/tmp/test file' .
scp: /tmp/test: No such file or directory
scp: file: No such file or directory
$ scp localhost:'/tmp/test?file' .
test file 100% 0 0.0KB/s 00:00
Edit: I'll answer my own question, which I clearly never thought about much, since the answer is obvious. I need to escape the space within the string. $ scp localhost:'/tmp/test\ file' .
test file 100% 0 0.0KB/s 00:00
Here is the Class Central page with reviews: https://www.classcentral.com/course/udacity-interactive-3d-g... You can search for other courses on class central, though searching for webgl didn't actually find the Udacity course - had to look at related courses for a no longer available Coursera course listing that searching did find.
Edit: Also, Packt's free ebook of the day is currently Learn Three.js, which is a wrapper around webgl. Only available for the next 9 hours or so. If you don't have a packt subscription, you can only read it in a web browser. https://www.packtpub.com/free-learning