If you've played Pokémon GO, the game should be pretty easy to navigate. If you haven't, basically use arrow keys to walk around, click Punkéstops to get free stuff, click Punkémon to encounter them, and drag the container to throw it at Punkémon when the inner circle is at its biggest. Punkécoins don't work like Pokécoins, instead they act more like candy that you use to evolve Punkémon. Please note I only started playing Pokémon GO a few weeks ago and I'm only level 13 so I'm not exactly your GO to guy on this game.
Team KhanA is short for Khan Academy Somuch credit to @Hobson-TV!
