Do you provide online training courses? Do you really want to increase your overall sales? If this is the case, you should translate your lessons into another language.
Unless you can do the translation yourself, it would be a good idea to hire specialists to translate your learning materials, PDF documents and notes into the language of your choice.
This way you can expand your current network and create more opportunities. In particular, for those who speak foreign languages around the world, by widening your geographic borders?
Another country or another language can be your vehicle for a whole new market for your online training course and boost your sales at a lower cost!