SPINY SHELL:
The spiny shell is the most dangerous shell on the game. When used it will home in on the driver in first place and attempt to blow them up. Any players caught in the blast radius will be thrown into the air for a few seconds. If a driver hits the blast while it's fading, they will simply spin out.
Tips-
There are multiple effect ways to avoid the shell.
-Pay close attention to your opponents' items (bottom screen). If you are in first, it is good to know when one is coming.
-A common way to avoid the shell is to immediatly drop out of first place (only use this method if an opponent is close behind). If done quickly the shell will skip you and home into the opponent that passed you.
-Use an item, such as a star or a ghost. Since these items are normally unobtainable in first place, you'll have to get them in a low position in the race. Keep the item with you (do not use it) as you work your way back to first. Then when a spiny shell is coming you can use the item and escape the blast unharmed.
-If all else fails and it's too late to drop out of first, try to take to blow up your opponent with you. Slow down a little and try to get slightly in front of the other driver. If done correctly, this will cause them to be hit as well.
BANANA:
This is the most common item in the game. These are basicly meant to slow an opponent behind you down or to be used as a defense. When a driver hits one they spin out but do not lose too much speed. However, while spinning it is momentarily impossible to steer.
Tips-
-Use caution on open sided tracks such as rainbow road. Hitting one on a turn will make it easy for you to fall off.
-Stay clear of bananas when firing such items as a red shell. Make sure the shell has a clear path and doesn't run into one on the way to it's target.