Read the whole definition for the word, and think about how the author is using it in context. Make a running list of words you encounter as you read.
[header] How to improve written english [title] Read books written in english. [step] Books and magazines can introduce you to new words, provided you pay attention to the words and look up the ones you don't know rather than skipping over them. [substeps] Keep a dictionary nearby when you're reading, and look up any word you don't know.