When I first started playing Pokémon Go the area of Gym Battles and getting your Pokémon attached to a gym so you can collect poké coins once a day was a mystery to me.
Now after a few weeks of playing and testing I have mastered many of the techniques out there and can now share what worked for me.
Step 1 - if you want to win Gyms you need a least 6 solid Pokémon with Hi CP. You get this by catching Pokémon and using stardust to up it's CP as high as you can get it.
Step 2 - Look for Gyms that don't have so many tiers one's that only have 2 or 3 Pokémon are easier to win then ones that have 6 or more. Here is why when you are let's say on the red team and you try to take over a yellow teams gym you are given 6 Pokémon from your stack to defeat the gym. If the gym has only 2 or 3 Pokémon you get to use all your 6 to knock them out. So even if your CP is lower that their's you can use 2 of your Pokémon to take down one of theirs.
Step 3- After you win all 3 battles you may not have the ability to add your Pokémon to the gym because the gym has to go down to 0 before you can make that addition. So go into your items area and charge up your Pokémon and then battle the same gym again. Usually winning a gym 2 or 3 times in a row will make it available to add your Pokémon to that gym. You will know it's time to add your Pokémon when the Gym turns white and an icon appears on the left side, click it quickly and add your Pokémon if you don't do this fast someone can grab it from you.
How to get Poke Coins? Once a day go to the store and click on the icon in the upper right it will add 10 coins for each Gym you are a member of. Here is tip if you get kicked out of the Gyms fast (in Central Park your lucky to stay in a Gym for a 1/2 hour before getting kicked out) so add your Pokémon to the gym and immediately after go right to the store and click on the icon on the upper right, you will get your coins immediately do this for 8 days you will have 80 coins enough for a Lucky egg.
