There is a online Sanskrut grammar online course being conducted once a week every Saturday at 5 pm IST.Anyone can join the class by downloading Zoom (cloud meeting software) on mobile smartphone and keying the meeting id as : 659 359 9196
Zoom App can be downloaded in the smartphone from respective App store.
For computer, the procedure is a bit elaborate and can be provided on request.
A high speed internet connection is a pre-requisite since it is a video conference and is a live class with QA facility.
Presently the course has covered upto सप्तमी विभक्ति. Interested participants can be brought into stream by providing earlier lessons.
The course is absolutely FREE – no hidden costs and will always remain FREE
Have a look at http://openpathshala.com/live-class
They provide Skype classes for Sanskrit.