I am really focusing on studying javascript now at codecademy.com , do you need to know much about html 5 and css when using construct?
For that matter, what else do I need to get ready for making plug-ins?
Example Code of my first textbased Javascrit game:D
burning-wood-media.deviantart.com/art/Starting-to-Program-My-First-Game3-378454610%3Cimg src="http://fc03.deviantart.net/fs70/f/2013/167/a/4/starting_to_program_my_first_game3_by_burning_wood_media-d69blg2.gif" border="0" />
Develop games in your browser. Powerful, performant & highly capable.
You should be able to get by with just a knowledge of Javascript (without CSS or HTML knowledge), and good experience with Construct 2 itself.