I would recommend starting by attending services at a local church, mosque, or synagogue. These are commonly accessible options where you can learn about Christianity, Islam, or Judaism respectively.
Another idea is to look for interfaith events or open houses at various places of worship in your community. This can give you a taste of multiple religions at once and help you decide which ones you are most interested in exploring further.
You could also reach out to friends or acquaintances who belong to different religious communities and ask if you can accompany them to a service. This can provide a more personal and immersive learning experience.