With the huge Gym update, there are changes to the way that PokéCoins are earned and distributed. The old limits are basically there. You earn one PokéCoin per hour for each Pokémon that is defending a gym. It must be a full hour of defense for the coin to be registered. Under the older, simpler formula where your received 10 PokéCoins per gym defender, the new formula is much more complex.

PokéCoins (defender) = HOURS(defender.TimeDefending)
TotalPokéCoins = foreach returned defender
   if PokéCoinsGainedToday < 100 and PokéCoinsGainedThisWeek < 700
     SUM(TotalPokéCoins, PokéCoins(defender))
   else
     SUM(TotalPokéCoins, 0)

The biggest takeaway is that there is a daily and weekly limit on the amount of PokéCoins you can earn. The article suggests that the best way to receive PokéCoins is to control five gyms that are not attacked often.

PokémonGoHub

There are tried and true ways to level up quickly in Pokémon Go, and if you follow them closely you will get to your next level faster. The basic idea is to capture as many low-level Pokémon as possible, and use a Lucky Egg to evolve them in succession for the entire 30 minute period to maximize the amount of XP you receive. Now let’s break that down.

Are you really lazy but want to do well with Pokémon Go? Then these five hacks are for you. You may have heard about a few of these, like using a fan to get distance and hatch eggs, but others are a little more complicated. Like faking your GPS transmission or spoofing your GPS.

These are probably geared more towards intermediate players, but some are still pretty good. Eight different ways to get more Pokémon including using Yelp, Lures, Ingress, Incense, and groups of people. The idea of using Ingress may have some good merit.

Someone actually collected all of the Pokémon available. But until now there wasn’t a good reference chart for all of the characters in the Pokédex. Once again a Reddit user comes to the rescue and posts a sweet chart that shows all of the existing Pokémon. Jadael has posted his high-res version to Imgur that you can download and reference as needed.

If you own an Android, this may be one of the best apps available. PokeNotify will let you know what Pokémon are around you so that you don’t have to keep Pokémon Go open and drain your battery. Even better, you can individually select which Pokémon you want to be notified about, so you can skip learning about all of the Pidgey’s nearby.

Now that you have enough Pokemon, have trained them, and have reached level 5, you feel ready to do battle at a gym. But how do you all but guarantee a win? This strategy might help.