So you've just started playing the game, fresh account, naked and you only have 25 coins, and you think to yourself "How can I earn coins in this game?"
The only ways you can earn coins using the hack is either by depleting your energy or purchasing items from the market.
1. Deplete your energy - Walk out of the area and you should notice a map with icons displayed on it. You will also notice you have a certain amount of energy. Tapping on one of these icons will display how much energy it requires to "run" to the specified area. Use your energy to "run" back and fourth to different locations. Once your energy has depleted fully, use your 25 coins you started off with to purchase more energy. In result of this, you should gain an extra 25 coins. Keep repeating till you have around 200 coins.
2. Purchasing market items - Once you have around 200 coins, you can now access the market. To do this, load up the map which displays the icons to travel to, and at the bottom there should be 3 icons. One that looks like a stack of coins, another one that looks like a map with a spanner in the middle, and an icon that looks like a rucksack. Tap the icon that looks like a stack of coins, and it should direct you to the market.
Once the market has loaded up, tap on Equipment, and swipe right till you see 'Logs and Bamboo' or 'Ton of Stones'. Purchase either of these, and you will notice your coins will increase by the price of the item that you purchased.
Repeat till satisfied.
You can also purchase Boosts, but you can only purchase one at a time.