Newbie - Mi español no es muy bueno

[Rensy]

So i've been learning for about 2 months - mainly using Internet and a CD by Michel Thomas...

I've always wanted to learn a language. So in my spare time I've decided to try and pick up a few phrases, and words.

If I'm in Spain could I say something like;

(PLEASE PLEASE feel free to comment / make suggestions, as I'd rather learn things correctly but slowly than quickly and badly!!!)

1) is this any good?
"Yo solo saber un poco español.
pero tratando de aprender mas...
puede hablar mas despacio por favor."

"I only know a little Spanish
but trying to learn more...
can you speak more slowly please"

2) what is best way of saying 'My Spanish is not very good'

Thanks
Col