How to enter next chapter

Hi
I have completed my introductary in mongodb.i want to enter for next chapter,so how to enter into it anyone suggest me
thanking you

Please check course page and overview pages
You can see details start date,due date etc
You may have to wait for next chapter as they are weekly based
Usually the next chapters will be in disabled state
Once it is open you can continue with your course

Thank you for the information