The subject of Chemistry need not be complicated. My experience is teaching chemistry to nursing and engineering students some of which never had a chemistry course. The basic skills with units of measurement, conversion factors, as well as math background, are extremely important. The issue with conversion math is the area where most students have difficulty, since the math issue carries through to more advanced problem solving. I approach chemistry conversions with specific rules for each problem type. The units must be used with each step. The use of WEB resources and other books other than the student's text can also reinforce my approach to solving chemical problems, which can be used in between sessions with students.