Welcome!
This course is designed to people who already has some knowledge on programming and/or JavaScript. In case you don't have this knowledge or you wish to get deep into this programming language, we recommend the online course at [link], where you will learn from the beginning and in a simple way, this language.
Making games in canvas is simple and does not require any specialized or expensive software. You can edit the files with any text editor such as MS Notepad. Anyway, we recommend using Notepad++, as it's ability to colour highlight syntax, helps to better read codes and make less mistakes. You can download it at http://notepad-plus-plus.org.
Now with these tools, you are ready to make your own games!