Want to start using less or sass. Tell me how!

Ok! So I want to be starting to use either less or sass, probably in combination with bootstrap.

How do I do this? I'm on Windows 8. Ive' tried to google it but I always get so unmotivated when I read the tutorials how to, because they seem to do it so complicated? Why isnt there just a IDE plugin or whatever that just complies the less/sass code into CSS?

AND which one of these two should I be using? Which one has the most backed up community and most support for the future?