I will help you. please ping me firstname.lastname@example.org
BI, Aspire Systems (India) Pvt Ltd
Actually it depends on your preference like classroom training or online etc..also you can find many forums on different social sites like linkedin or udemy etc aprt from this there is no other better source than Tableau site itself.
You may also try tableau public gallery, download the dasbhboards and do the reverse engineering
Makeover Mondays is a great start! The more you use Tableau the more proficient you'll become and rather quickly. Helping out here in the forums, answering questions, is another way to boost your knowledge, it's how most Zens and Ambassadors began