I was in Dharwad over the weekend and could not read most of the shop signs. I could guess a letter here and there, mostly because I had seen it repeated, but that was about it. So I built a small app to teach myself.
It covers all 49 letters: 15 vowels and 34 consonants. Once the letters are familiar, it moves on to the vowel combinations, which is where reading actually starts. Each round runs for 60 seconds and ends with a score out of 20. When you finish, you can send a friend a link to the same 20 questions and see who scores higher.
It is free. There is no login and nothing to download. It works in the browser on your phone.