Grammar fix

general idea

overall understanding

A basic or broad understanding of something, without knowing all the details.

collocationB1common

Hear it in context

Notice where the phrase sounds natural.

I have a general idea of how the new software works, but I still need some training.communication
Even if you don't know all the facts, having a general idea about the topic can help you answer the question more confidently.IELTS speaking

Pattern: have/get/give a general idea (of/about something)

WrongI got the general idea about the plot.

RightI got the general idea of the plot.

'General idea OF' — not 'about'.

Patternhave/get/give a general idea (of/about something)

Choose the version that sounds natural in speech.

Stiff I have apprehended the broad conceptual outline.

Natural I get the general idea.

'Apprehended the broad conceptual outline' is absurd; 'get the general idea' is natural.

Words that usually travel with it.

Different from 'detailed knowledge', which means knowing everything about a topic.