Please stop by. All college majors have both required courses and elective courses. Sometimes deciding on which of these to take, and then actually getting registered for those classes seems like a continuous set of hurdles. Other students can provide really valuable information about which professors are easier, which are more interesting and which will really help you learn. However, be aware that you may not always agree with other students.
Some excellent professors are very demanding.
If you want to learn the material, don't avoid professors just because they are hard. And, don't ask other professors which professors to avoid. Professors can be very valuable in advising you on which courses will help you accomplish your goals, which courses will broaden your perspective, and which courses are required. It would be unprofessional for a professor to tell you to avoid another instructor. Professors can also give you pointers an how to get enrolled in classes that are already full.