Park Your Money Where It Pays
While you should keep some savings liquid in an account you can quickly access for emergencies, you might as well be earning interest in the process. Savings accounts may not be as lucrative as they once were, but they're not created equal. Pick an account with a higher yield to keep your money earning for you.

And, the amount you keep in savings will depend on your comfort level and other financial needs, (such as eliminating high-interest debt). But, as a goal, having six months of living expenses available is ideal. That way, if you were to lose your job, you'd be covered long enough to hopefully find a replacement.