How to connect pc and laptops using LAN cable

laptopS or laptop? If one, can use a cross-over ethernet cable, set both PCs to the same IP range 192.168.1.1 for one, 192.168.1.2 for the other.

For more than 2 PCs, or if you want to make things much easier to configure, get a Router that will do the IP address for you automatically, connect computers to that.