All the exams are free. You can take any exams any number of times.

• All situation based question
• No limit based question
• Most questions span across multiple services
• All the latest service (ex: Lambda, Cognito) is included 
• No too obvious answers

Latest patterns can be found as part of comments and posts in below forums

• Reddit 
• acloudguru forums 
• Linuxacademy forums
• Udemy course reviews comments
• Medium blog and comments

Sectional test have less number of question and revolves around some crucial parts of the exam

The practice test is a full-blown which are the exact simulation of aws certification test with the exact same number of question in a time-bound manner.

Use these exams with other learning materials like Wizlabs, Tutorialdojo along with what mentioned in the blog 

If you get 80% in all the three exams and certification you are ready

You can have a look at this post. For some project ideas. This repo has more than 700 project ideas.

I can help you with your resume tips