Under in-app purchase page, click "get free crystals" to launch video trailers for other mobile games. You get one crystals for each video you watch.
Easy Friend Stones
click the "Like" button above an username who you visit the ranch, for easy Friend Stone. This action can be performed only once per day.
Select "Visit Random" under "Neighbours", interact with the neighbours' monsters by petting the creatures, and you can get a gold from this interaction — Can repeat it multiple times at random ranches.