How do you legally start an online business or service?
I want to offer online classes in Religious Studies subjects after I graduate with my degree in Religious Studies. I would charge maybe or per person per class, and offer subjects such as: Introduction to World Religions, Learn to Read and Write Hebrew, Introduction to Judaism, Introduction to Ancient Religions, etc.
I myself took an online Taoism class like this, and really enjoyed it.
But how do you do this legally? Do you have to get a business license? How do you do taxes? What else do I need to know about starting an online business?
Thanks.

you might try to contact an established school and see if you can offer your course through them.
Barnes and Noble has a line of online courses where this might fit.
make a book and sell it on ebay..