I think the most important thing is to start communicating with others in the language! Learn useful words, used in everyday situations, so you can practice them when you go to the shops, the post office, or a café etc and see how you get on. This communication is essencial for learning! If you purposely put yourself in these situations where you have to interact with others, you are forced to find a way to communicate. You will have to try and express what you want with the vocabulary you know and then you get to practice your listening too! At first, you may feel stupid or timid because you know so little Spanish but it will get easier and easier and I really think the best way to learn is through real life experiences! You can learn grammar and verb tables on your own, with a teacher or on the net and practice whenever you have time; constantly repeating things is always good! I have looked for many different websites for learning Spanish and each site has it´s pros and cons!
http://www.spanishdict.com/learn/show/64 This is good for GRAMMAR but personbally I can´t stand the girls accent in Spanish! I try very hard to imitate native accents but this girls seems to have problems with vowel sounds so be careful not to copy her! haha It´s fine to have an accent but it´s always better to try and perfect pronunciation!
http://www.123teachme.com/learn_spanish/annotated_video/no_pretendo - This is a great site - There are songs translated - This is a fantastic way to learn! You can sing a long, repeating and practicing phrases and expressions etc!!!!! You will learn the subjunctive with ease and there are many interesting theories on learning languages with music!
http://www.bbc.co.uk/languages/spanish/ - VERY SPANISH but great for grammar (http://www.bbc.co.uk/languages/spanish/grammar/) and to hear the differences in accent and the use of language!
http://www.mainframe.cl/diccionario/diccionario.php?=&pagina=3 - Diccionario de MODISMOS CHILENOS
These sites contain a range of diffent accents and dialects; it´s important to hear Spanish speakers from all over the world! I have lived in many different Spanish speaking countries - Spain, Las Islas Canarias, Venezuela, Cuba, Uruguay and Chile and they all have there own slang and very distinct ways of talking, however, they all speak SPANISH! Personally, my time here in Chile has made me reflect on my Spanish. The Chileans use a great deal of filler words and slang and if you are communicating, with other Chileans, I think it´s important to understand this, however, I realise that I don´t want to speak like the majority of Chileans all the time but I do want to be able to communicate with everyone. One of my favourite things is the difference between accents and dialect in the hispanic speaking world! It´s great fun using slang but I don´t want it to go against me! It´s important to know how to say things in an educated manner too! Many Chilean friends of mine are very aware of how they speak and they are not particularly proud of it. Many Chileans have told me that Peruvians, Equadorians, Bolivians y Columbians speak Spanish in a much more polite, respectful and educated manner.
Also very important to watch news etc
I hope this is helpful. If anyone else knows of any other good websites for learning Spanish please let us know!