I think your first step should be to read this guide to learn how to properly ask R related questions here, that would greatly improve your chances of getting help.
R has built in documentation on packages and functions .
For example typing ?lm into your R console will open the documentation on the lm function .
Search - Be sure to search for the basic keywords of your question with your favorite search engine, Stack Overflow, and R-Help. Stack Overflo…