It may sound a little stupid to you, but using English resources for children is the perfect way to begin learning a language. Children’s books, movies, and TV shows are basic. When an English-speaking child learns for the first time, they’re going through the same steps as you are now. It all begins with basic vocabulary and sounds.
When you use children’s books and movies together with your other self-study textbooks and language learning materials, you’ll understand more. There will be very few things you don’t understand and this will boost your confidence. There’s no better feeling than being able to understand something in another language.