Nintendo Yoshi's New Island Electronic Manual

To perform a Flutter Jump, press and hold the 'A' button while in the air. Yoshi will kick his legs and hover for a short period, allowing you to reach distant platforms.
If the game freezes or crashes, try restarting your Nintendo 3DS system. Ensure that the game cartridge is properly inserted, and your system software is up to date.
The game automatically saves your progress at the end of each level. You can also use the pause menu to return to the World Map, where your current progress will be saved.
Yes, each world has a secret level that can be unlocked by collecting all the Smiley Flowers in that world.
To defeat larger enemies, try using Yoshi's ground pound ability by pressing down on the control pad while in the air. Some enemies might require multiple hits or specific strategies to defeat.
Red Coins are hidden among regular coins and contribute to your score at the end of each level. Collecting all Red Coins in a level is necessary for 100% completion.
Minigames are unlocked by collecting medals throughout the levels. The more medals you collect, the more minigames you will unlock.
Winged Clouds contain various items or bonuses, such as extra lives, stars, or coins. Hit them with Yoshi's eggs to reveal their contents.
To improve egg throwing accuracy, practice using the aiming cursor that appears when you prepare to throw an egg. You can adjust the trajectory by moving the control stick up or down before releasing the egg.
Explore every part of the level thoroughly, use Yoshi's abilities to reach hidden areas, and pay attention to the environment for clues. Don't hesitate to replay levels to find missed items.