Where to gain knowledge?

sir agar apnay knowldge lena ha to apko wo sirf demo account say hi mil sakta ha qk demo account bhi real account ki tarah ha lakin just ham demo account ma withdraw nai krwa sakty ha or islay demo account say ham knowledge bhi hasil kr sakty ha islay apko mehnat krni chahiye takay ap aek achi or best earning bhi kr sakyy