Step 1: Duplicate Template
When you open the template on the top-right you can click duplicate to move the template into your account.
Step 2: Watch Tutorials for Assistants and GPTs
Step 3: Watch Tutorials for ChatGPT Use Cases
Step 4: Start Exploring
The easiest way to use the template is by sticking to the front page. Everything you need is right there.
If you want to go further you can start clicking the different databases that you can find underneath the headings.