Using Photos in Your Blog

Photo by Dawn M. Hamsher, 2013

I've been trying to snap more of my own photos to use on my blog instead of using ones from the internet.  

What are the "rules" for on-line photo usage? Originally, I thought as long as your give credit, then it was okay. It's not.

Here's what I found:

5 Rules about Using Web Images in Your Blog 

How do you use photos on your blog?  Do you take your own? Do you get permission? Do you have any tips?