Quality of Words, Not Quantity, Is Crucial to Language Skills (2014)
nytimes.com
nytimes.com
Now look at it again only from the point of view of someone who knows just a few common words (but knows these well): "Know### (maybe the past?) ### words and ### before you've (you have? maybe) master## (what's that slavery stuff about?) the simpler ones is in my opinion a wrong ### of ###. (a wrong what?)"
One other trick I've found very useful in finding out the meaning of words is to reduce them to something even less than a stem, simply drop all the vowels and pretend all the d,t and v,w and c/s pairs and so on are equal. If you know a word in another language of the same family chances are that you can figure out what a word means. It's surprising how often that method yields results (and some spectacular failures as well!).
I was taught to read with a dictionary beside me so that I could look up any word I did not know the meaning of. Do it long enough and you can build up quite a vocabulary.