TLDR: There's no shortcut to this. We need organic voting -- people vote on questions and answers that are good. Invite others to the site.
If you want to increase your voting, I suggest you log in daily and check the newest questions linknewest questions link on the home page, and vote on whatever is new.
I just want to remind people that voting needs to be done responsibly, or it can be very dangerous. Voting is the foundation of SE; it raises and lowers reputation, which is mostly related to abilities and privileges on the site.
Also, SE has some mechanisms in place that relate to false (and seemingly-false) voting patterns, voting rings (people who just vote for each other), socks (fake users who exist to vote up other users), and other farces. You may trigger some security mechanisms inadvertently, and I'm not sure what the ramifications will be. Already, we're seeing some users have lost seemingly ill-gained reputation (like someone voting on 5-10 of their questions/answers within a minute or two -- favoritism).
I suggest we follow my TLDR recommendation: try to look at everything (at least every question) and vote on it. People seem to be voting on answers already, so I think we just need more (people and questions/answers).