ids have to be unique. When I wrote "id='anotherlogo'" I was just giving a placeholder.
You don't have to give them ids, I put one on there in case you had more divs like that.
The Google one is probably all set, now, just add new divs as you need to, and assign them ids as necessary, or not at all.
The .row div in the style tags means that for all divs contained in a container of class row should be floated left, meaning without breaks between them.
A great resources is
W3Schools Online Web Tutorials.
Keep going, your code is coming along nicely.