How to take care of a paintball gun?

Depends what type of gun you have, depending on the type of gun, it will need different steps for maintenance. Most beginner markers are pretty straightforward but as you get to higher level guns you will have different steps to take care of that you never see in low-end markers. As the person stated before, youtube does have some videos that show the steps of maintaining your marker but try to use "reputable" users because some users honestly do not know what they are doing and just do whatever and put their video up anyway.