Replacing blog title with own logo in Magazine Basic

Hi, I have recently set up and launched my site (http://www.northeastnoise.net/), using the Magazine Basic theme, and am looking to replace the title of the blog with my own custom logo image. Unfortunately if I’m honest I know nothing about HTML or code, and was hoping there would be a plugin which would allow me to accomplish this. First of all I would like to know if such a plugin is available, and if not if anybody would be able to provide me with a step-by-step instruction for adding the logo.

Thank You