Office Network

Hello,

Just joined the forum. So here’s my question:

I am considering to create a network in my office. The following devices are to be connected together:

1. My PC
2. Colleague’s PC
3. HP Laser Printer

The purpose of this exercise is to:

1. Share files/work on same files at the same time in a folder, which is available for both PCs

2. Use the same printer

What equipment/cables is needed for this network? Also, any software will be required separately too?

Thank you for your help.