What Different Types Of Mortgages Are There? I Dont Want To Be Scammed?

I dont want to get scammed into taking a mortgage I dont need. Can a mortgage expert enlighten me on mortgages. i would also like to hear the laymans views as well. How many types are out there; Pros and cons. I just heard of an inerest only but the only sense I can make from it is that there is no principal on the loan. Does that mean I would [...]