What you want to do, is go to layer adjustments> Hue/Saturation.
Step 2: Adding Sepia Tone 2
Tick the colurise box and drag the Hue to 15, Saturation to around 14 and lightness to +2.
This should give your image colour a nice smooth sepia tone.
Step 3: Adding Noise
Click on your original layer and go to Filter> Noise> Add Noise and set the noise to around 4.80% Gaussian Just play around with that a little bit until you find a nice amount of noise to suit your picture and press OK
Step 4: Adding Scratches
Now we're going to add a new layer and fill it in black. Don't worry. You haven;t ruined the image. Now while on that layer, go to Filter> Texture> Grain and add a 52 intense and 50 contrast veritcal grain effect and press OK
Step 5: Making The Photo Viewable
Change the black layer to a screen layer.
Step 6: You're Done!
Congratulations! You're finished. Remember, If you ever think that there is too much Noise/ Grain, you can always go back and change it, as long as you saved it as a PSD + Image. So if I were you, I'd save it as a PSD.
Please give any feedback and I hope you enjoyed :)