These tips are more for Standard English Conventions and Words In Context.
Read academic journals (it does not have to about reactants mechanics, you can read it about sleep, or whatever interests you), and anytime you see a punctuation point you do not understand, go online and find when the punctuation is used, then based off of what you get, try to find out in what way it is used in there sentence.
For unknown words, look up it’s definition, and connect that word to another word you know has a similar meaning to it, and keep track of any kind of pattern you see between words as it could be expanded to more than just the words you already have in that “pattern”