Note that whenever you place three tiles of the same number they will turn into the next higher number gem so place them strategically to make matches – Important – The last gem you place is where the new higher value gem will be placed.
Use your power gems and increase their power whenever possible as they will increase your score greatly.
Be careful you don’t place your power gems in a place that isn’t a match or it will turn into a red number one gem and you will lose it.
Once you choose your free power gems you can use coins to increase the strength or frequency of them and the overall star power they will add to your game.
Facebook friends and random players are you best methods of instant games.
Tap on the icon in the upper right corner or at the bottom of the round screen and you can chat with your opponent leaving them messages they will see when they log in to play their round.
Be sure to play regularly so others will keep playing with you. There is a forfeit button which looks like a white flag at the bottom left of the game screen if you want to quit playing with someone.