HW1 will soon be available on CMS. You will receive CMS access shortly before HW1 is released.
To develop efficiently, have a local web server running. Python has a simple, built-in server. Use python -m http.server for python 3; use python -m SimpleHTTPServer 8000 for python 2 (execute "python" in cmd for version number). You probably have python 3.
What are some of the unusual aspects of this language? Open a console in your browser...