Wasted a bunch of time reading through Salesforce official administration and automation documentation before my first attempt. Thought I had all the concepts down but the actual exam was totally different from what I studied.

Got frustrated and switched to itexamstopics.com exam topic-wise questions instead. Grabbed their web version which had all the practice tests I needed. They also provided demo questions upfront so I could see exactly what the real exam format looked like. Doing real practice tests instead of reading those docs helped the material stick way better. Two weeks of focused practice exams and I passed on the second try. If you're going for ADX-211, skip the Salesforce docs and jump straight into practice questions. Their web version is solid with good demos to get you started.