Have I Committed Copyright Infringement? Yes, You HAVE!

I'm very impressed of your article on how to create your own anthology. I have almost 250 articles posted online and, honestly, some of them I copied from books but I also include the author and its complete sources. I'm a fan of reading books and I don't have a talent in writing because I didn't earn a degree. My only question is, does my work compromise the law of copyright infringement or plagiarism? If so, can you explain why?…