Important lessons I learned through the test.
1. A course wouldn't be that helpful as it doesn't teach you the contents that actual exam has. Honestly, I found it only 20 percent helpful. Not worth the money at all.
2. The textbook has lots of contents, but still, the questions are much more in-depth and require critical thinking and application.
3. Make your own style of learning and put your best effort to comprehend the questions.