Be a good citizen. Of course, that means following the rules. Being a good example to everyone, be fair in evaluations of businesses and individuals, help your family and friends understand democratic processes, help get out the vote. If you do not fully understand a specific area, say, the electoral college, do research so you can explain it to others. With Goggle and others, you can type in a word and have a pretty good understanding of that word, almost instantly. That assumes you have picked up technological skill along the way to help yourself and others work with and within the democratic process. A democracy MUST have democratic principals deeply engrained within a person's frame of reference. Constant revision of those items and updating them makes you a more informed citizen.
Up to this point, this blog has been explaining what is needed within a citizen in a democracy to function and benefit the society.
In reality, all our lives are becoming full from sun-up to sun-down. Raising kids, getting ahead at work, keeping everyone happy, paying bills, makes it difficult to enrich our frame of reference in democratic activity.
Start your quest by considering what you think is reasonable for you. No, we can't be activitist full-time, just take a small chew of the problem. Choose an issue that interests you most, then start contributing what you can towards progress--contacts, money, time, skills, etc. No contribution is too small.
Try to keep yourself informed. Pick your media to coincide with your beliefs and it will give you insights on any given topic, allowing you to gain a "citizen's level" of expertise so you can talk with others about it.
Use the computer that you have available, in home, in library, use it.
Our democracy is a living breathing thing. It belongs to all its citizens. Join with others, everyone feels better when they're part of a group, a movement, a community (whether real or virtual).
Become the media, write a blog, a newsletter, internet radio broadcast, etc.
Start up a local neighborhood group that meets periodically and discusses the issues. Move the group around, not always at one house, have the group bring refreshments--many successes in politics have come from these type meetings.