It depends on the answer to the classic question of "what do you want to be when you grow up?" Electronics is a very broad field which contains many different disciplines and different level of training.
Common to all things in the field of electronics is a strong emphasis on math and science skills. Also communication skills are a must have.
For the rest it will depend on what part of the field of electronics you want to work in. Do you want to be an engineer or a technician? Inventing new things, or providing support in existing applications. Hardware or software? Answering these questions will help narrow down your focus for what areas to focus on for futher learning.