Yoshi Touch & Go/Tips and tricks

Tickle Baby Mario
At the end of a sky level, Baby Mario will float to the bottom screen. During this time, you can tap Baby Mario to tickle him.

Coins in trees
While Baby Mario is falling near the end of the sky level, you can tap the leaves of the trees to reveal more coins.

Bonus points
Hitting multiple objects with a single egg (otherwise known as a combo) will earn you bonus points. The more enemies and coins you hit, the more bonus points you will receive.

Colored Yoshis
Depending on the score achieved in the falling part of the game you will receive a different colored Yoshi. After 60 points to get a Yoshi other than the green one, its 20 more points before getting the next one. You also get the next colored Yoshi after each 1000 yards in Marathon Mode

Special Colored Yoshi
* Believed to be dependent upon number of enemies killed/coins collected/times transformed into Super Baby Mario