Donβt be afraid to also try learning on duolingo itβs a good program and it can also help you with vocabulary.
When reading real books, stick with simpler ones and pay attention to grammar and punctuation, it really helps in the long run. Though Iβm a native English speaker, it always helps to keep a keen eye even in my own language. But you are bilingual, so keep on learning! It proves youβre very smart.