Computer Network

Hi, if anyone could help me with this I would appreciate it so much! Just looking for a starting point on this:

You are required to produce a report describing how to set up a computer network appropriate for the following situation.

Windmill Hall is a music recording studio, based in a converted windmill in the country-side. The studio uses computers in its studios for recording music, in its accounts department for managing finances, and in its marketing department for preparing publicity material. The studio is connected to the global Internet.

The report should show how: connections for the studio local-area network might be arranged and how the connections for the studio wide-area network might be arranged.
In particular, it should highlight, in three sections, about the concerns of security, reliability and efficiency are addressed.

Marks will be awarded for clear set up instructions for a network just sufficient to meet the requirements.
One third of the marks will be awarded for a diagrammatic description, which should use standard Cisco notation, and be accompanied by explanatory annotations. The last two thirds of the marks will be awarded for the costing and implementation plan of the local-area network.