The best tutorials or learning contents that we have come across

The good tutorials/learning contents that we have come across for learning following things.

Javascript : 

Basics –

1. http://javascript.info/
2. https://github.com/mbeaudru/modern-js-cheatsheet
3. https://www.geeksforgeeks.org/java/

        
Advance – 

1. http://crockford.com/javascript/
2. Crockford:  https://www.youtube.com/watch?v=JxAXlJEmNMg&list=PL7664379246A246CB

Jquery : 
    Basics –

1. jQuery in 15 minutes: https://www.youtube.com/playlist?list=PLqGj3iMvMa4KOekRWjjajinzlRK879Ksn

CSS : 
    Basics –

1. CSS Basics: https://www.youtube.com/playlist?list=PLqGj3iMvMa4IOmy04kDxh_hqODMqoeeCy
2. CSS Positioning: https://www.youtube.com/playlist?list=PLqGj3iMvMa4L731ispRfGAabXeRpM4RL6
3. https://developer.mozilla.org/en-US/docs/Web/CSS
4. https://learn.shayhowe.com/advanced-html-css/

SCSS : 

    Basics –  1.       http://sass-lang.com/guide

Bootstrap : 

    Basics –

1. https://www.youtube.com/playlist?list=PLqGj3iMvMa4IPwMW-sSXn1Q_pVu5tUMCw
2. Official Doc: https://getbootstrap.com/docs/3.3/css/. Version 3 would be a good place to start. Bootstrap 4 is the current version (released in Jan)

Advance – 

        Hints and notes on browser compatibilities for Javascript codes, CSS, etc.  please comment with yours