During a typical Sunday service the lay reader simply reads the first 3 passages from the lectionary. The passages are emailed the Wednesday before the service so there is plenty of time to look over them. Anyone who has opened the bible knows it does not read like a children's book. Don't be intimidated by the unusual 5+ syllable words and names of people and places, even the most veteran lay reader stumbles from time to time.
Be an altar server! Or, as Fr. Kevin likes to call it: ecclesiastical gopher. Go for the Gospel book. Go for the water. Go for the offering plate. You will get to assist in multiple ways during the service in a role that is both important and easy to learn. Anyone can be an altar server - all you need is a willingness to serve and a desire to glorify God through your actions.