If you are looking to study animal osteopathy as a new career, AAO would recommend that you look carefully at the prerequisites, the indicative content, the methods of teaching that are used, and the support mechanisms the school has in place.
Check that the provider offers you live support, solid theoretical knowledge and face-to-face practical classes with your peers, so you can learn from each other and your lecturers. There should be proper practical assessments (in person), so you can be sure that whatever you have been taught and assessed to do on animals is safe and correct, and there should be some case-based learning to contextualise your knowledge, supported by written exams to evaluate your progress. Without a robust education in animal osteopathy, not only may you struggle to get insurance, you may also be at risk of hurting an animal.