Hello,

There are a lot of Online Sanskrit course that you can choose from.

1. Udemy

2. Openpathshala.com (//Openpathshala.com)

3. Learnsanskritonline.com (//Learnsanskritonline.com)

4. Classcentral.com (//Classcentral.com)

5. sanskrit.today

6. learnsanskrit.org (//learnsanskrit.org)

The best resources for learning any language is speaking and listening to the language as much as possible.