What is the easiest way to create this setup:

WiFi internet router separate in one room.

Study room: Laptop with USB printer connected with wifi.

My room: Laptop connected with wifi.

I want to be able to print from the "My room" laptop to the "Study room" printer, and also share files between them.

What is the easiest way to do this? Note, the wireless router needs to be in a separate room for both laptops to be able to connect to it.

I've tried configuring homegroups and stuff to do with IP addresses that I found on the internet but have had no success.

I'm not an expert with PC's but I've tried hard so there is probably just some trick to do it. If someone can help that will be great.