Law is the very new subject - which you never studied earlier. We are here sharing most complicated chapter - Indian Contract Act
Why to start with easy, let's check most challenging chapter
You will not understand 100% concepts in demo - Because lots of your doubts will be resolved in further videos.
If you understand 70% + then its superb
If you understand 50-70% then good you can continue, 100% clarity will be achieved when you will do full course.
If you understand less than 50% only - then you need to contact (either you are not studying properly or demos are not proper for you)