Questions about example sentences with, and the definition and usage of "Lowdown"

A: low-down means true facts or the truth about something
so in this sentence it means the truth/real information about those 33 sports

A: When someone says "here's the lowdown," they are going to tell you specific and relevant information about something.

A: lowdown = secret information, something that is not commonly known

hidden gems = something (or in this case, some place) that is special but many people don't know about it

A: It's an expression that means "details".

A: @Min_Yang: thank you

A: - Can you give me the lowdown on what happened?
- He gave me the lowdown on the meeting
- This is the lowdown on what we’re doing.

A: "To give the lowdown" on something or someone is to give someone a summery of the topic, normally including personal or possibly secret information.

For example:
A: What's going on with John? He's been acting really weird lately.

B: Okay, I'll give you the lowdown- his girlfriend broke up with him and is now dating the guy who was his best friend.

A: It only exists in Southern vernacular English, which is why you might hear it in blues music. It is not very popular anymore. It means low in status, wretched or dishonorable. Alternately, when used as a noun, "the lowdown" can mean the news or a summary of the situation.

A: "Mean and unfair."
https://en.oxforddictionaries.com/definition/low-down