I need help creating an ardunio device for school but I have no experience in electronic. How do I start?

This is for my school major project. I already know what I want to make and have some idea, but I don't know how to make it.

It is an alert device (specifically a fire alarm) for people who are hearing impaired. Although I am not gonna build an actual fire alarm with sensors, it is only going to be like a simulation. My idea is to have two separate devices: one is the actual alert device with LEDs, vibration, and sound, and the other is a remote that sends a signal to the alert device to trigger it (hence simulating a fire alarm). The main idea is that it's a portable device that can be attached to furniture (a bed, in case the user is sleeping, so it can receive a signal via vibration) or placed somewhere visible, and it has to have bright LEDs that emit light in multiple directions. There is still a lot I need to consider, like how it's powered, the case, etc. Therefore, to start creating it, I first need to understand how the electrical components are going to work. I did some research and decided to use Arduino. Can someone pls help me to figure out what I need to do and how to do it, as well as what I need to buy? If I didn't include enough information pls ask. I would really appreciate any help.