Qpowie

How do I get dig before 3rd gym? Don't you buy it at Celadon City? Also 2nd gym would be a bitch wouldnt it?

So, I am trying to power through the first 4 gyms (after that just plan buy spending the money I made doing the first 4 gyms to buy a level 100), am wondering what starter to pick. The current plan is to pick Bulbasaur and catch Ponyta and keep those even until gym 4 is complete. Any better ways / suggestions to beat the first 4 faster? Different pokemon?