In my opinion the UE4 is perfect for beginners, because it has a good documentation, userfriendly UI, an awesome community and lots of learning ressources. Beside that there are also blueprints -> so you dont need any coding experience. 
Here are some useful links
https://docs.unrealengine/latest/INT/
https://wiki.unrealengine/Main_Page
When there are any questions, just post them here into the forum or answerhub -> we are always here to help. 
https://wiki.unrealengine/Videos