Attaching a Loop Strap:
Grab one end of the loop strap. Now insert this end in the space between the camera and bracket provided to secure the strap. It could be a small steel bar or a strip of plastic with a little gap between it and the camera for inserting the end of the strap. After inserting the thin end in it, pull that end of the strip out from the other end of the bracket.
Grab the other end, and close the loop. Once you have pulled it tightly, your strap will be attached to the camera.
Attaching a Clasp Strap
Take one end of the clasp strap, and insert it in between the strap bracket and the camera. You can pull the other end of the clasp strap via the bracket.
Now place the end of the strap into the clasp, and tighten it up until its length is adjusted according to your desired length. Once the length is perfect, pull out the strap. Ensure that it is tightly secured to the camera.