Read good books, and notice the phrasing. Try to work out why each word is placed where it is, and how the grammar works.
This is what I do when looking at a new language. It's best if you know the story, so you concentrate on the structure. When I don't know a noun or verb, I often don't bother looking it up, as long as I can identify its place in the sentence - as long as I can parse it. That's one exercise you could try.
Student or Learner