Finding the right vendors can be one of the most stressful parts of wedding planning! After years of working in the industry I have a list of vendors that I've either worked with personally or have a great reputation in the industry.
My biggest piece of advice would be ask around! A lot of people around you have been married and done that so ask who they loved what they didnt and things they would do differently if they could go back.
Join all the facebook groups, theres a ton of vendors advertising their business as well as references and advice!