Event Viewer

Don't laugh, but I'm learning about using the Event Viewer and had a question about the "Administrative Events" log: is it good practice to attempt to fix as many of the common error events as possible before something major happens to the system? Mine has tons of warnings but also lots of error logs. I'm tempted to dive in and try my hand at reducing these, but with my limited knowledge of a comp system's anatomy, I'm naturally a little hesitant--esp if the solutions end up doing more harm than good. Thanks again for your help