If you are an ASCP member they have lots of webinars that certify you for different subjects. Also you can get classes with product manufacturers. I went to seminars for Image skincare, Control Corrective will start certifications for their peels online.Also PCA started an online certification ($200). Universal companies have a lot of courses (some paid, some free). I am sure that there are a lot of other ways, but I did not researched more