Take classes in sequence.
Now, taking classes in sequence may sound like the automatic thing to do, but I have seen students taking college level classes who did the exact opposite. I never got to know what led them to make that choice, but I highly advise against it. The students I encountered had taken higher course levels before completing the preceding level. One had enrolled in Spanish 102 ahead of 101 and the other student had taken Spanish 202 ahead of 201. The two reached out to ...