There are a few resources from whom you can learn about tax. If you are a member of a specialized business group, they may have some key resources. There may be incubators (like www.investottawa.ca) that offer free seminars on topics such as HST. Newspapers, especially national ones, have specialists writing particularly about personal tax matters. Blogs and the CRA websites may also help.
Books are great resources too. For a good introduction to taxes, I recommend Evelyn Jacks’ books. They provides knowledge in proper amounts so one doesn’t bite off more than they can chew. Still, the 6-cm thick Income Tax Act is as complicated as human nature, so some of her tactics require professional help. Tim Cestnick, who writes a column in a national newspaper has great tax strategies but they can be very complex.