What is best displaying a long list of items

Hi in my app user can select an item in a long pre-defined list to add to the user owned list. The user's list therefore may have hundred of items. The user must be able to see what items are in his / her list and remove items from the list as well. The list works exactly like how you would compose an email on Google mail and add people the to recipient list. How can I effectively do this. Thanks.