Hi there, If you have not tried the Udemy course by Chris Murphy I recommend it. I have been using UE4 for about a year and did a lot of youtube learning which helped to a point. But this udemy course helped me grasp everything much more. There is a lot of content in the course and it is specifically Geared (couldn’t resist the pun) toward blueprint design. The lectures cover a wide range of subjects and the community is helpful, with Chris answering questions.