An important part of being a Christian is faith - but faith is nothing without works. Doing "good works" means you must act in accordance with your beliefs. If you believe that you should be generous, then you should act generously.
Doing good works is all about being the best Christians we can. These Bible verses about works should help you understand that being a Christian is not just about faith. Having faith is easier than doing works in the name of the Lord. Acting like a Christian can be hard - and that's how we prove our faith.
So read this scripture on good works if you need to be pointed in the right direction. "Let your light so shine before men, that they may see your good works, and glorify your Father which is in heaven." - Matthew 5:16 ... as Matthew says, let our light be seen by our good works, which glorify God.