Idiom 3
If you want to get the best deals in the market, then you should remember that the early bird catches the worm.
Meaning: By arriving early, you will get the best products and at the best prices.
The concert tickets will go on sale tomorrow, so make sure you book right away as the early bird catches the worm.
Meaning: If you want the best seats, then you must book early.
Idiom 4
You can't have your whole family plan your wedding! Don't you know that too many cooks spoil the broth?!
I know you want to help, but too many cooks spoil the broth.
They tried to complete the project together, but too many cooks spoilt the broth.
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Those are some good ones. There are many more too. We are a country of idioms.