Honestly, I think you should go from the First Gen. up (Red/Blue/Yellow). This is for two reasons, one because as you go to more regions, the games become slightly better, as well. And second, the next generation will have Pokemon from the last Gen, so it'll be good to get a feel of the Last Gen first. And personally, start with Yellow. In Yellow, you start with Pikachu and get all the starters. It's pretty fun. So yeah, just do that.

Pokemon Blue was my favorite 1 Generation Pokemon game.

Crystal was my favorite 2nd Genration so you cant go wrong with either.

But if you want to actually catch em all play all 6 of then

Go from first gen up.

bro ,

if u wanna enjoy than go and play the fire red

its awesome i hav played it and completed 3 times believe me its fantastic.

and after completin fire red jump to the crstall/silver .

:-)

My fav was Silver