The Avada theme has a very comprehensive theme documentation page that covers everything you need such as; Installation , Demo, Options, Header, Pages, Builder, Blog, Portfolio, Sliders, Footer, Sidebars, Translations and Extras.
There is also a well stocked knowledge base that has answers to some of the more common Avada questions that may arise.
For those who like video tutorials then they have that too.
And if you still don’t have the answers you are looking for then you can head over to the Avada support forum where you can post your specific problem and await an answer from Avada support.
So, all up there is a lot of Avada documentation for you to digest and solve any problems you may have with any part of the theme.