Well good question. Take a look at my profile and follow the links to my attempt at providing just the information you need to do that.
You have already come to the right place with hubpages, I am sure you area already making money using hubpages.
A quick list:
(1) Write quality content
(2) Monetise with good quality high worth affiliate programs and Adsense
(3) Work on SEO for your content
(4) Market - make sure you do this as much as possible
(5) Seat back and repeat the above
(6) Be patient and continue to work at it
(7) Eventually you will start to see return - believe me it does come if you do the above correctly.
All the best