It's my pleasure to help set up the system in QuickBooks Online, @paris-karami63-g.
If you want the steps by steps process of setting up your company file, the first thing to do is to Sign up for QuickBooks Online.
After signing in, answer a few questions about your business. This helps us set up your company file and tailor the program to better fit your needs. Once done, start adding information about your business by proceeding to the Settings ⚙️menu, then Account and settings.
Then, link your bank and credit card accounts, import lists, and enter sales transactions. For further details, please check out this article: Get started with QuickBooks Online.
I'm also adding these resources you can utilize to help record expenses and track bills: