Download Cheat Engine 

1. Enter FarmVille 2
2. Open Cheat Engine.
3. Select process in Cheat Engine (FlashPlayerPlugin.exe for firefox users)
4. Scan type is "4 bytes"
5. First Scan for "1000000"
6. Select ALL the addresses returned and click on the red arrow.
7. Select ALL the address and change the value to "1"
8. Now go and buy the "HarvEstate Manor". It should cost only 1 coin. (if not, you did something wrong)
9. NEW SCAN "50000" 
10. Select ALL the addresses returned and click on the red arrow.
11. Select ALL the address and change the value to "1000000"
12. Sell the Manor now.
13. You will get 1 million coins now! 

1. Enter FarmVille 2
2. Open Cheat Engine.
3. Select process in Cheat Engine (FlashPlayerPlugin.exe for firefox users)
4. Scan type is "4 bytes"
5. First Scan for "397"
6. Select ALL the addresses returned and click on the red arrow.
7. Select ALL the address and change the value to "5000"
8. Now go and buy the "Hay Wagon". You should see that it is 5000 exp now.
9. Buy the Wagon.
10. LEVEL UP! Have fun!