Here is a link to an awesome CSS gradient generator
http://www.colorzilla.com/gradient-editor
Here is a link to an awesome CSS button generator
http://www.bestcssbuttongenerator.com
W3 Schools is a great assistant for HTML & CSS
HTML Color Names are funner!
http://www.w3schools.com/tags/ref_colornames.asp
HTML Color Picker is a great way to find similar colors
http://www.w3schools.com/tags/ref_colorpicker.asp
Robot.txt Generator
http://www.mcanerin.com/EN/search-engine/robots-txt.asp