team yellow here!
how do u get great balls btw?
You said you were level 11 right, so soon as you rank up you should unlock the Great balls.
I'm level 24 at the moment, and boy is the grind almost painful, I need 150,000XP to rank up to level 25 and get max potions. Hopefully they add other methods to rankup soon. There are so many Weedles and Pidgey I can evolve before I will throw the phone against a wall out of frustration.
My strongest Pokemon is the 1732 Snorlax I got from a egg yesterday, then 1497, 1339 and 1326 Vapareon, then the first of my six magmars, I also got another one yesterday in the wild.
I finally got myself enough Magikarp candy to evolve one into a Gyrodos, just need a strong Magikarp.
The three tips I can give trainers is first to not waste your Stardust on pokemon until you reach atleast level 20, because I can gaurentee nearly every pokemon you get before that level will be too weak and you'll end up transfering them anyway.
Also if the a pokemon has two evolution stages, wait until you have enough candy to do both evolutions because like before if you evolve early there is a good chance you will catch a pokemon that is much stronger and you'll regret your decision.
Lastly if you plan to rank up, do not ignore all those Pidgeys, Caterpie and Weedles you see, they only require 12 Candy for the first evolution and when if you evolve a bunch of them together with a lucky egg running you could easily get 40,000XP quickly, I'd also leave my evolutions until I have a bunch of Pokemon ready to evolve, that way you can do it with a Lucky Egg running and get 2000XP for a new evolve.