Hi! From what I've gathered from other aesthetic nurses, the best way to start is by networking. So if you currently get aesthetic work done on yourself maybe ask your nurse if she knows anyone or if she herself would be willing to mentor you. Just something to get your foot in the door. I bought some textbooks off of amazon so that I can get a good base knowledge and I'm currently looking for a good journal to subscribe to. The classes and trainings that you mentioned are usually only 1 day courses so I think you'd be better off shadowing someone and being mentored by that person!