how add code to webpage

hello

I do not know how to use code- all the stuff and plugins and installs i do to my site I do all automatically. However, I want to add this logo to my site and the webiste tells me that i jst need to add some code anywhere on my website (http://www.expatwomen.com/expat-women-about-us.php#link) but I have no idea as I never deal with code) where to put it- can anyone help? please