Maksym

https://uptodate.frontendrescue.org/ - How to keep up to date on

https://developers.google.com/web/fundamentals/

http://wwwhere.io/ - wwwhere provides a list of tools and resources for people who make websites. Information found here is the result of a few years of collecting and organizing websites...

https://github.com/sindresorhus/awesome - A curated list of awesome lists

http://kangax.github.io/compat-table/es6/

http://tympanus.net/codrops/css_reference/ - An extensive CSS reference with all the important properties and info to learn CSS from the basics

http://csstriggers.com/ - I figure we needed a definitive reference for what work is triggered by changing various CSS properties.

http://www.sitepoint.com/sass-reference/ - Sass Reference. An attempt at making Sass more approachable by providing short yet insightful entries for all buzzwords.

http://sass-guidelin.es/ - An opinionated styleguide for writing sane, maintainable and scalable Sass

http://firstaidgit.io/#/ - A searchable collection of the most frequently asked Git questions http://firstaidgit.ru/#/