Google is your friend. The Internet has a lot of example and command samples to perform tasks all you have to do is run a search. This is often the only approach because the built in help really requires you to know the command name to start with which is not very useful.
For samples of actual code, you can try the Google code search with the option lang:shell.
Friends and support groupsEdit
You should never be shy of asking for help from knowledgeable people around you. They often will give you a quick answer that you have to research or tune to get the complete answer however it will give you a starting point for the following commands to be truly useful.