what are nouns?
what are pronouns?
what are articles?
what are verbs?
what are adverbs?
what are composition?
http://www.chompchomp.com/terms.htm
Look up each term here and study the specific webpages, explanations and examples.
Whatever you can't find there, you can find via Google or Bing:
1. Go to http://www.google.com or http://www.bing.com
2. Type in compostions (or whatever search terms you need). Press Enter.
3. Read different search results until you find what you need.
4. Re-search with different search terms if you don't find all you need.