Magento certificate

I've been working on building modules for about 2 years ~6 months on magento 1 and the rest on magento 2.

So I'm thinking of it is the right time now to take magento 2 certificate test.

Do you think its a good time now? Which test I should begin with?

PS: regarding front end I only added a new element to nav bar and added a link between sku and price in product page so as frontend magento I'm weak :p

Thanks in advance.