Bumper covers are just that. Plastic covers for the real structural bumper underneath it. Don't be surprised to find automotive styrofoam underneath. If you can change oil/tire you can absolutely replace it yourself. Just take a look online forums for your car or it's service manual. Many are available at your library for barrowing.
If it helps, on my 2002 Toyota, when I needed to replace bulbs in a corner light, I nearly had to drop the front bumper to replace it. On another 2009 GMC to replace the headlight bulb, we also had to move the bumper forward a bit to get to screws to move the headlight forward. Such a hassle, but it seems trivial to remove a bumper.