UTP Cat 5 problem, how will I solve it?

UTP Cat 5 problem, how will I solve it?
My friend has computer shop business.
She has 6 units of Intel Celeron computers and she has a problem on connecting her computers in one router and hub.
She 100 m of UTP Cat 5 but she has no knowledge on how to connect it with all the computers.
She tried to watch related videos to solve her problem, but nothing happens.
She even research on how to connect it from her computers.
What she will do in order to connect her computers in one Hub and Router?
Please help her.
