How do I get a GameObject to move left and up at the same time?

I have only been on Unity for 3 or 4 days, so feel free to talk to me like I had my brain removed.

 

1. You need to use the Translate method (https://docs.unity3d.com/ScriptReference/Transform.Translate.html).
   
2. The direction of movement is determined by Vector3 (https://docs.unity3d.com/ScriptReference/Vector3.html).
3. Vector3 has some predefined values that are quite readable. Example below.

Code (CSharp):

1. // Both options are equal
2. transform.Translate((Vector3.left + Vector3.up)); // Option 1: more readable
3. transform.Translate(new Vector3(-1, 1, 0)); // Option 2: magic mumbo jumbo

Of course, the example is not optimal, because you need deltaTime and speed.

Code (CSharp):

1. transform.Translate((Vector3.left + Vector3.up) * Time.deltaTime * 0.1f); // To slow down

1. Beginner Scripting: https://learn.unity.com/project/beginner-gameplay-scripting
   
2. Intermediate Scripting: https://learn.unity.com/project/intermediate-gameplay-scripting
   
3. Junior Programmer Pathway: https://learn.unity.com/pathway/junior-programmer
   
4. Manual: https://docs.unity3d.com/Manual/index.html