You have already linked it so that's enough. I just wanted a summary list at the end of my post for the text references. I also see some that do not hyperlink at the body of the post (but mentions the authors or sites) and only add a Reference section. You can do it either way, I'm just being OC ;)
For photos, I watermark some of mine or I add a footnote that the photos are mine. Tbh, this is something unclear to me. In academic papers (depending on format), it is required to have your name and date (if known) of the photo. I do not see this in blogs though and I haven't found an article with a clear guideline. I guess the problem there is if someone would steal your photo and you have to prove that you own the copyright.
I checked @rubencress' photos and he adds the c mark. I also see different practices, some indicate a note in the end that the photos are copyrighted and even add that they can be contacted if they want to use the image, some make it clear that it's theirs only. I don't really know the standard for blogs and I will let you know if I find something :)