The most famous form of magick is prayer

Prayer is a basic kind of magick. You pray, you cast spells. You tell somebody else about what you want and you imagine what you want while telling it. You can't help but do that.

It is important to know that imagination is a big part of magick. Whether you work with islamic magic (havass) or any kind of western magick, it always ends up with imagining what you want to happen.

During a prayer, you both try to put some entity (God or whatever fits for that purpose for you) in charge in the name of yourself and you imagine what you pray about.

This is the basic form of magick and billions of people are doing that every day. Whether they succeed or not is another issue. To know that prayer is a form of magic is necessary to get the hang of magick.