Don't Fall Into the Scholar's Mate!
Really, only fools can fall into this one. This checkmate is so obvious before it even happened, and is so easy to prevent it.
Scholar's Mate
This checkmate pattern usually comes after the Bishop's Opening, and aims at the weak f2/f7 pawn. The f2/f7 pawns are really weak, because the only defender of the pawn is the king. Let's have a look at the checkmate!
If you got the answer, Nf6, then well done! Nf6 protects the f-pawn like a shield, at the same time preventing the queen from threatening the checkmate even more with Qh5! And another bonus, is that Black has developed one more piece, gaining an advantage in tempo!