The idiom "learn to walk before you run" means that one should learn and master a basic skill or task before attempting something more complex or challenging.

The idiom "familiarity breeds contempt" means that when someone becomes too familiar with someone or something, they start to dislike or despise them more. It suggests that when we get used to something, we can become less appreciative of it and even begin to disrespect it.

The idiom "glass ceiling" refers to a barrier or obstacle that prevents someone from advancing or achieving their goals, often due to discrimination or bias based on factors such as race, gender, or social status.

The idiom "a bolt from the blue" refers to an unexpected or sudden event that catches people off guard. It can also describe something surprising or unexpected, even if it's not necessarily negative. Example sentences:

• The news came as a bolt from the blue - I had no idea whatsoever.

The idiom "get rid of" means to remove, discard or do away with something. It can also mean to drive away or expel someone or something from a place. The figurative meaning is often used to describe an action that is necessary to eliminate a problem, danger or unwanted situation.