You can make your component editable from the components screen within any page.
Management - Making components user editable
Any components you add will be manageable by you in development mode, but it's likely that you will want to make some of them easy for standard users to manage.
This option requires you to be in edit mode Advanced, learn more about edit modes here.
If you are working from an existing template you can see how other components have been made editable from the main websites screen. You can also use this menu to change the order of editable components which changes the order which they are showen to the user.
This option requires you to be in edit mode Advanced with Development enabled, learn more about edit modes here.