Have you tried looking this stuff up using the search feature?
Scales
http://www.guitartricks.com/search.php?input=scales&submit=%A0++go
Riffs
http://www.guitartricks.com/search.php?input=riffs&submit=%A0++go
Chromatic
http://www.guitartricks.com/search.php?input=chromatic&submit=%A0++go