Jenkins on AWS EC2 installation:
Step 1: Set up Prerequisites (make sure you have JDK 1.8 or more).
Step 2: Launch an EC2 Instance
Step 3: Install and Configure Jenkins
In this step you will deploy Jenkins on your EC2 instance by completing the following tasks:
- Connect to Your Linux Instance
- Download and Install Jenkins
- Configure Jenkins
To see the further steps check out this video:
To answer your second question, you must check out this blog which covers in and out detail about clearing AWS Solutions Architect.
And also master AWS skills from our AWS Course page.