How to record revenue of sales into a journal and how do I know which contra account to use? If I sold a room for $100 I will credit my sales account correct? Which account would I need to debit?

Hello all, I'm trying to get to grips Sage Accounts level 3, at the moment it's the contra entry. I can get the screen up for it but I'm confused after I enter the customer and supplier account references, I just don't know which I should highlight or or if there is an order. Thanks very much...

Does anybody know of music by Handel which was originally scored for the forerunner of the Contra-Bassoon( Double Bassoon)? The original instrument would probably have been something like a Contra- Fagotto ?

I want to write off cash what entries should I pass in journal or what is contra account for cash write off?

Could someone please give me a simple example/s of contra account and a simple explanation of what it is. Thanks