Well, something you definitely have to avoid. You commit copyright infringement when you violate intellectual property rights, namely copyright, a form of protection provided for original works of authorship. An instance of infringement is the failure to attribute a creative piece that is owned by someone else.
We have discussed in previous posts what you should do in order to properly cite your sources or images you use in you blog that you do not own.
But that does not mean you always have to quote. According to the Copyright Act short quotations “[…] for purposes such as criticism, comment, news reporting, teaching (including multiple copies for classroom use), scholarship, or research, is not an infringement of copyright” constitute fair use – bear in mind though that is US law, it might be different in the country where you reside. “Transformative” uses are more favorable, i.e. commentary, not straightforward copying. You might also want to consider the possibility to obtain a Creative Commons license:
The best way to avoid copyright infringement is to create something original. That way you can be absolutely sure no one can accuse you of anything. Then, if you definitely need to republish content from another author, be it a book writer, a scientist or another blogger, try to come in contact and get their authorization.
In order to use images, you have to follow pretty much the same procedure, although decorative images and other common patterns are usually not protected by property rights.
For more details, click on the following link. It will redirect you to Blogger Content Policy:
It is also important to remember that pieces of work public domain can be used freely: