How to (#2783)

* add HOWTO for new contibutors, edit documentation

* edit

* add resource titles and delint

CONTRIBUTING.md

@@ -11,9 +11,9 @@ By contributing you agree to respect the [Code of Conduct](https://github.com/Eb
 3. We have 5 kinds of lists. Choose the right one:
 
     - *Books* : PDF, HTML, ePub, a gitbook.io based site, a Git repo, etc.
-    - *Courses* : A course is a learning material which is not a book and where there is no interactive tool embedded in the site. [This is a course](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-fall-2011/).
+    - *Courses* : A course is a learning material which is not a book. [This is a course](http://ocw.mit.edu/courses/electrical-engineering-and-computer-science/6-006-introduction-to-algorithms-fall-2011/).
     - *Interactive Tutorials* : An interactive website which lets the user type code or commands and evaluates the result (by "evaluate" we don't mean "grade"). e.g.: [Try Haskell](http://tryhaskell.org), [Try Github](http://try.github.io).
-    - *JavaScript Resources* : Any resources teaching a JavaScript framework or library.
+    - *Podcasts and Screencasts* : Podcasts and screencasts.
     - *Problem Sets & Competitive Programming* : A website or software which lets you assess your programming skills by solving simple or complex problems, with or without code review, with or without comparing the results with other users.
 
 4. Make sure to follow the [guidelines below](#guidelines) and respect the [Markdown formatting](#formatting) of the files