Destructoid - Miyamoto may have created Pikmin to be a "carefree experience," but that doesn't mean it lacks depth. With the addition of a particularly creative set of local multiplayer modes, Pikmin 3 has a ton of gameplay related nuances that may be lost to the void if you aren't careful.
Here are some tips to help you acclimate yourself to the wonderful, cute world of Pikmin.
As a side note, there are a few spoiler related story bits that I'll completely avoid here. Some of the single and multiplayer tips are interchangeable.