diff --git a/docs/work/certifications/microsoft/microsoft-azure-az-900.md b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
index 86dd7a5..49544bc 100644
--- a/docs/work/certifications/microsoft/microsoft-azure-az-900.md
+++ b/docs/work/certifications/microsoft/microsoft-azure-az-900.md
@@ -2,11 +2,24 @@
 
 Microsoft Certified: Azure Fundamentals，代号为AZ900，是Azure的初级认证考试。微软的认证也是有体系的，当完成初级认证考试后，就可以申请中级认证和高级认证，继续考试。
 
+考试的相关讨论请访问 [Microsoft Certified: Azure Fundamentals 认证考试](https://www.isharkfly.com/t/microsoft-certified-azure-fundamentals/17770)
+
+## 学习要点
+AZ-900 的考试比较简单，但也绝对不是简单到什么都不看，随便做做测试就能过的那种。
+
+至于网上那种随便看看就过了那种，我劝你还是不要相信了，其中的主要问题在于 Azure 的概念很多，服务很多，而且很多服务又是交叉重复的。
+
+考试的时候可能会因为概念不清楚而选不出正确答案。
+
 ## 概念和定义
 
-* [resource tags](https://www.isharkfly.com/t/azure-resource-tags/17796)
+* [Resource Tags](https://www.isharkfly.com/t/azure-resource-tags/17796)
 * [Azure Role-Based Access Control (RBAC)](https://www.isharkfly.com/t/azure-role-based-access-control-rbac/17797)
 * [Azure Policy](https://www.isharkfly.com/t/azure-policy/17798)
 * [Azure Defense in Depth](https://www.isharkfly.com/t/azure-defense-in-depth/17799)
 * [Azure Cognitive Services](https://www.isharkfly.com/t/azure-cognitive-services/17800)
 * [Azure Service Endpoints](https://www.isharkfly.com/t/azure-service-endpoints/17801)
+* [Azure Conditional Access](https://www.isharkfly.com/t/azure-conditional-access/17802)
+* [Azure Power Apps](https://www.isharkfly.com/t/azure-power-apps/17803)
+* [Azure Bastion](https://www.isharkfly.com/t/azure-bastion/17804)
+* [Azure ExpressRoute](https://www.isharkfly.com/t/azure-expressroute/17805)
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