{Newbie here} Anybody know a SIMPLE way to make my sprite/object shoot bullets?

You can instantiate a Prefab you make of your Sprite, which in this case, would be your bullet. On your bullet prefab, you can have a script that will add to its position: transform.position += transform.forward * Time.deltaTime * 20; //20 can be considered your 'speed'

make a new object in the scene and name it "bullet".

 using UnityEngine;
 using System.Collections;
 
 public class NewBehaviourScript1 : MonoBehaviour {
 
 
 
 public GameObject thebullet;
 
 public Vector3 dir = new Vector3(0,1,0);// i added a variable to remember what direction player pushed last
 
 float speed = 0.05f;
 bool fire=false;
 
     void Start () {
         // find the object in the scene and asign it to a variable;
         thebullet=GameObject.Find("bullet");
     }
 void Update () {
         //always multiply speed by time. Otherwise things move faster on faster computers!!!! 
 
         speed = 10 * Time.deltaTime;
     //Ship Movement
     if(Input.GetKey("down") || Input.GetKey("s"))
         {print ("down");
          transform.position = new Vector3 (
              transform.position.x,
              transform.position.y - speed,
              transform.position.z - speed
             );
 
             dir= new Vector3(0,-180,0);
 
     }
     
     if (Input.GetKey ("up") || Input.GetKey("w")) 
     {
         this.transform.position = new Vector3 (
             this.transform.position.x,
             this.transform.position.y + speed,
             this.transform.position.z + speed
             );
             dir = new Vector3(0,0,0);
     }
     
     if (Input.GetKey ("left") || Input.GetKey ("a")) 
     {
         this.transform.position = new Vector3 (
             this.transform.position.x - speed,
             this.transform.position.y,
             this.transform.position.z - speed
             );
             dir = new Vector3(0,-90,0);
     }
     
     if (Input.GetKey ("right") || Input.GetKey ("d")) 
     {
         this.transform.position = new Vector3 (
             this.transform.position.x + speed,
             this.transform.position.y,
             this.transform.position.z + speed
             );
 
             dir = new Vector3(0,90,0);
     }
 
         if (Input.GetKeyDown("space")){
             thebullet.transform.eulerAngles=dir;
             thebullet.transform.position=transform.position;
             fire=true;
     }
         if (fire) {
             thebullet.transform.position=thebullet.transform.position+thebullet.transform.forward*speed*2;
                 }
     }
 
 }