I want to get started and I want to start with defining our company

• currency
• registered address
• actual office address

and put a directory of all employees

• name
• address
• ID
• date of birth
• work address
• bank account*
• work contract
• work time/week
• holidays/leave
• salary calculation

I don't want to add customers, or supplier's, or products, or anything else at start.

Is there a guide somewhere on how to do that best? I mean what modules would I need? I assume hr of course, but would it be helpful to have 'address book' right at the start for example? (or maybe that isn't even related to employees and my own company?)