Druid.io, what kind of beast? How to quickly integrate into his environment?

Question

Database

In general, having read https://habrahabr.ru/company/yandex/blog/303282/ , I decided that druid.io would be ideal for my metrics . The only problem is that I have never worked with such large analytical databases and tools that he uses under the hood.
How to quickly integrate into his environment?
What did you use when diving into druid?
What pitfalls did you encounter while working with the druid?