Right grammar is the key to become a language guru

By profession, I am a software product manager. I help companies design beautiful products in an efficient way.
Since English is a necessity nowadays for all business communications, I want to help people learn English as much as they can.
English in general is one of the easiest languages. But a bit confusing as well. Therefore it’s very necessary to learn the right grammar and pronunciations. I would like to help people focus on their grammar and practice their pronunciations to help build their confidence to speak. Confidence is the key to become proficient in English.