Pokemon and its name been around since 90's. The words i.e. pokeball and pikachu can refresh your memory if you are a 90's kid.

Pokemon Go Obsession Goes World Wide
But one thing is for sure pokemon go obsession isn't going away anytime soon. I visited central park yesterday and wow just the number of people their came to catch imaginary creatures was ridiculous.

Pokemon Go Players Gathered in Central Park to Catch Imaginary Creatures

How to Play Pokemon Go
Pokemon Go is a simple game to say the least. There are no official walkthroughs or guides which will get you started. Just install 'Pokemon Go' on your android or iphone, go outside and search near green leaves that appear on your GPS in the game, to catch imaginary fluffy cartoon like creatures. Pokemon Go Map showing the location of Pokemon using Leaves

Once you discover a pokemon, it will appear on the map, just throw your pokeball and catch it.

All the pokemon go creatures you acquire in the game, you can train them, do battles at gym's and take over them, simple recipe to become pokemon master.
PokeStops are represented by Blue Markers in Pokemon Go
Poke Stops are your new Bus Stops
There is also a concept of Poke Stops in the game. These are usually landmarks and important buildings in real world. In Pokemon Go they will appear as blue markers on the map. Once you find them and near just tap, swipe and get the goodies.

Plenty of item's are already in the game i.e. Pokeballs, eggs, razz berries, lucky eggs...