I am a student from Mexico. I can asure you that this course is worth your time and effort, it helped me understand how a mechanical watch works and gives all the fundamentals that you need to begin.
But if you are from Mexico like me I have to mention that getting all the tools and especially the oilers is going to be hard, you can only order the tools from other country’s and getting the oilers is really hard due to import specs you need to get them into the country.