new to the interior…. where to start?

Ive done enough work around the outside and underside of a vehicle to be generally comfortable.

Never done any interior work. Looking for strategies that have worked for you, or a way of approaching this that does not become overwhelming..

The car smells musty after a rain. I want to remove the carpet and give it a proper cleaning, and hopefully get some idea as to where the water leak is coming from. Thinking that getting the carpet out, and being able to scrub and dry it properly...

new to the interior.... where to start?