You can get a Pokemon ROM and an emulator for free... Although it's illegal...
filefront.com is the first place I'd go to.
it comes with the pokemon (buy one get one free^-^)
You have to get a Bike Voucher from a man in the Pokemon Fan Club in Vermilion City and go back to Bike Shop and the man will give you a free Bicycle.
Get the bike voucher in the Pokemon fan club in vermilion city then show it to the cashier in the bike shop for a free bike.
get the bike ticket and bring it to the bike shop and you will receive a free bike
Hmm it depends what you mean by free, if you mean by free like some sort of arcade or something...i don't think you ever can but i know a way to play it for free...basically get a gba emulator...which is called a vba (visual boy advance) i think the latest version can play gameboy colour and gameboy games as well... then simply download the Pokemon Blue ROM...look around on Google and voila you have free Pokemon blue and not only that it's...slightly better than a gba.
how to get exp.share in pokemon blue
Pokemon blue to ruby is sapphire.
You can't get Pokemon from blue and give them to emerald.
There are no Running Shoes in Pokemon Blue.
Entering the GameShark code 01017CCF in Pokemon red/blue allows free pokeballs to be bought at the pokemart.
The Pokemon that are in Pokemon blue are at least the first 149 Pokemon in the pokedex. I'm not sure about Mewtwo or Mew though