Hi, Brenda
There are many ways of copyrighting, the easiest is to print all photos or burn on cd or dvd, place in envelope seal and date the envelope, then save in a safe place i.e. safe deposit..

Next, you can ( if you use photoshop) go to file/information and type info there which will be part of the photo. Include the copyright info there.
You can place the copyright info on the face of the photo,i.e.:
©copytright month, day, year Joan doe
another option is to place the same info on the reverse side of the photo.
If you are posting on a web site, many people "watermark" their photos with copyright info. That way if anyone downloads your info will bew across the photo.

The copyright law reads that copyright isn't needed as date of first publication is all needed.

The other option is to send to copyright office. Best way is to burn all the photos either on cd or dvd and send to copyright office with a form. There is a slight charge for this way of doing it, I think under $25.00you can get the form on line, just do a search on copyright or U.S. copyright office.

I just place the copyright info in the photo info and then copyright each print, sometimes on mat or on photo or on back, depending on which mood I,m in.

Hope this helps you somewhat
Michael