About social medias.
linkedin, google+, facebook page, twitter, github, codepen.

Design, kika på webbplatser på montage.se
http://montage.se/webbdesign/

CodePen with background.
http://codepen.io/mosbth/pen/gaXqvR

CodePen positioning
http://codepen.io/mosbth/pen/ZbawRZ

CodePen backgrounds in areas
http://codepen.io/mosbth/pen/LpOqgN

About codeshare and gist
http://codeshare.io/
https://gist.github.com/

GitHub and git.
Install: http://dbwebb.se/kunskap/installera-versionshanteringssystemet-git
Get going: http://dbwebb.se/kunskap/kom-igang-med-git-och-github
Make a repo on GitHub.

About responsive development:
ctrl-shift-m Firefox, Google Chrome
Firebug Developer, Firefox OS