Too and enough

Too means "more than is necessary or desirable".

Too + adjective/adverb
This jumper's too big. Can I try a smaller size?

Too much/Too many (+noun)
I can't eat this. There's too much salt in it.
There are too many people there. Let's go outside.

Too + adverb/adjective (+ for + object) + infinitive
It's too cold to play football today.
He spoke too quickly for me to understand her.


Enough means "as much as is necessary"

Adjective/adverb + enough 
Are you warm enough or shall I turn the heating on?

Enough + noun
We'll have to stand because there aren't enough chairs.

Enough (+ for + object) + infinitive with to
I haven't got enough time to see you today.