HTML, CSS, JQuery Cheat Sheet

HTML
https://www.cs50.net/lectures/8/cheatsheets/html-cheat-sheet-v1.pdf
http://www.nihilogic.dk/labs/canvas_sheet/HTML5_Canvas_Cheat_Sheet.pdf
http://lesliefranke.com/sandbox/ref/htmlcheatsheet.pdf

CSS
http://www.trupela.com/wp-content/uploads/2009/12/css-cheat-sheet-v2.pdf
http://webs.uvigo.es/redes/php/Css_cheat_sheet.pdf

Jquery
http://woorkup.com/wp-content/uploads/2011/12/jQuery-17-Visual-Cheat-Sheet1.pdf