http://archive.ncsa.uiuc.edu/primer.html

http://www.w3schools.com/html/default.asp

http://www.htmlcodetutorial.com/

http://www.htmlgoodies.com/primers/html/

http://www.google.cl/search?hl=es&q=manual+html&revid=1430882854&sa=X&oi=revisions_inline&resnum=0&ct=broad-revision&cd=1