That’s a pretty tricky part, because either you scrape all informations from different websites together (youtube, forum, google,…), ask questions in a forum or you find somebody that is willing to help you (easiest way to get fast and good informations) 
But when you learn the best with solving problems that are annoying you, just jump right into the adventure and start doing some stuff with the UE4 (e.g create a level, create and import your own assets, make some materials,…)
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