Learn Hindi Online
This is a link to a Series to learn Hindi online (beginners level)
Learn about Agnihotra
The following two links from the Arya-Samaj South-Africa deal with the topic of fire ritual, also known as Havan or Agnihotra for coping with the coronavirus. They contain information about the procedure, performance and an introduction by Pujya Swami Vedanand Saraswatiji and dr. B. Rambilassji.