Going back to old levels also serves to build up coins, especially for when you need to get more moves. The more moves you have left at the end of a battle, the easier it will be to catch the Pokemon (or for the expert levels, the more time that you have left at the end of the battle). For tough battles with very few moves, use the +5 moves bonus or the Pokemon will end up being nearly uncatchable.
1. Use your hearts efficiently!
2. Be frugal
3. Remember Pokemon weaknesses and strengths
4. Stay tuned for events
5. Play effeciently and effectively
6. Take the challenge!
7. Use Mega Evolutions