“Brush up on something”

“Fall on deaf ears”

To be ignored or not listened to.

“On a shoestring”

With very little money.

“Go belly up”

To fail completely, especially a business.

“From the ground up”

From the beginning or basic level.

“Have a lot on your plate”

To have many responsibilities or tasks.

“A new lease on life”

A renewed energy, purpose, or opportunity.

“All hands on deck”

Everyone must help with an urgent task.

“Keep tabs on”

To watch or monitor carefully.