How to load and then hide a random image from multiple ones on canvas. Urgent (please respond)

Hi there! Pretty new to Unity so please bear with me!
The project I must do is very simple: I have different simple 3d objects (spheres,stars, cubes) which act like buttons. OnTap or OnMouseButtonDown I must zoom in on the object I tapped (or make it bigger as if to open up) and load a random Jpg from a list of Jpegs. It should look as if the image was in the object or atleast the canvas should fade in very close to it's surface.

What I have done so far: I have succesfully set up and hooked up the models to be reactive to tap/mouseclick. Now I must understand how to make only one of the thirty images appear within the canvas before I close it.
I have added some images and converted them to 2d/UI sprites and put the images on the canvas.

-How to call each of the images within the canvas (let's say I've named them image1, image2 ... image30)
-How to make the zoom in on the object before the canvas appears- Should I use a camera zoom to each object or rather make the object come closer to the camera (whichever is easier to configure)

Thanks so much for any advice in advance!
I would usually resort to tutorials and documentaion but I have only a day and a half till this is due!

 

This might help as a starting point. Might be worth checking Cinemachine if you have the time. This kind of question should also probably be posted in Scripting.

Code (CSharp):

1. using UnityEngine;
2. using UnityEngine.UI;
3.  
4. [RequireComponent(typeof(Camera))]
5. public class Test : MonoBehaviour
6. {
7.     public Image image;
8.     public Sprite[] sprites;
9.     public Transform moveToTarget;
10.     public float maxDistanceDelta = 1;
11.     public float stopDistance = 2;
12.  
13.     void Start()
14.     {
15.         image.sprite = sprites[Random.Range(0, sprites.Length)];
16.     }
17.  
18.     void Update()
19.     {
20.         if (Vector3.Distance(moveToTarget.position, transform.position) > stopDistance)
21.         {
22.             transform.position = Vector3.MoveTowards(transform.position, moveToTarget.position, maxDistanceDelta * Time.deltaTime);
23.         }
24.         transform.LookAt(moveToTarget);
25.     }
26. }