You can try in BBC website, there are very good links with courses to learn some languages from zero... spanish included. Another websites with some free samples courses are livemocha.com and busuu.com but it's not all free. As the best dictionary online to me is www.wordreference.com with a conjugator to check all spanish verb tenses and the most of words have the sound recorded. When you have a pre-intermediate level you can try with www.newsinslowspanish.com with some podcasts in a very slow pronuntiation with the text written to read what you are listening...

I love the sound of Spanish and learned most of it through listening to Spanish Music - Salsa and Merenge and then of course, I recommend you to go dancing to Spanish Music - I promise you, you will get the hang of it fast