Plug in SEO

As a complete novice at this kind of thing, I found this an incredible help. SEO is something I just don't/didn't get, but this has given me a brief understanding of what I should be putting on my pages, and I got success just by trial and error.
I would recommend this app very highly, especially if, like me, you are just starting out, what have you got to loose....it's free!
Thank you so much.