CSS
ID's and Classes: https://css-tricks.com/the-difference-between-id-and-class/
Horrid Site that People Refer to: https://developer.mozilla.org/en-US/docs/Web/CSS/Reference
Specificity Calculator: https://specificity.keegan.st/
Absolute vs. Relative Positioning: https://codemyviews.com/blog/the-lowdown-on-absolute-vs-relative-positioning
Absolute vs. Relative Positioning: https://codemyviews.com/blog/the-lowdown-on-absolute-vs-relative-positioning
YouTube Channels
Mackenzie Child: https://www.youtube.com/channel/UCfWZwsP8trUy5uHJg8gcGIQ
Level Up Tutorials: https://www.youtube.com/channel/UCyU5wkjgQYGRB0hIHMwm2Sg
PODCASTS
Code Newbie: www.codenewbie.org/
Free JS Exercises: javascript30.com
JAVASCRIPT
http://jshint.com/Free JS Exercises: javascript30.com