So can you guide me here -

I am preparing for Databricks Data Engineer Associate certification using the contents & Materials at link - 'https://customer-academy.databricks.com/learn/learning-plans/10/data-engineer-learning-plan'. My ask are -

1) Is that the correct starting point and sufficient course material to prepare for the Certification or is there more to it? 

2) Please if you can clear this doubt and provide all relevant links (I am not in a condition to avail for any paid stuff involving a fortune without a guarantee of employment).

3) What is the difference between 'Databricks Free edition' and 'Databricks Academy Labs', which one is best suited to certification preparation.

Sincerely, Regards.