◇ Could this help me?
Yes, for the domain breakdown rather than the certificate. The six weighted domains are a genuinely useful map of what competence in this area consists of, and they are worth reading even by someone with no intention of sitting an exam, because they name the parts people skip: evaluation and error analysis, memory and state management, and guardrails and accountability all appear, and those are precisely the areas where enthusiasm outruns practice. Judge the certificate itself separately, since a vendor certification demonstrates familiarity with that vendor's controls rather than general capability. General practice, and the useful action is to treat the six domains as a self-assessment checklist.
Use these six areas as a self-assessment of my agentic development skills: agent architecture and development lifecycle processes, tool use and environment interaction, memory and state and execution management, evaluation and error analysis and tuning, multi-agent coordination, and guardrails and accountability. Ask me questions in each area to find out what I actually know rather than what I have read about, score me honestly, and then tell me which single area would improve my results the most if I worked on it next. Point me at freely published material for that area rather than paid courses.