Learn that the five vowels in Spanish always make the same sound in every word: a=ah, e=eh, i=ee, o=oh, u=oo. Once you understand this concept, Spanish pronunciation is the easiest to learn of any language. The vowel sounds do not change across dialects or regions of Spanish-speaking countries. Once you master the vowels, you can sound like a native speaker.
Label everything in your house in Spanish with a Post-it note. In your cocina (kitchen), label your estufa (stove), paredes (walls); in your sala (living room), label your mesas (tables), lamparas (lamps), etc. Label items with the Spanish colors azul, rojo, amarillo, etc. Use any Spanish dictionary to find new words. You will quickly learn Spanish vocabulary and adjectives this way.
Learn these five basic expressions: tengo que (I have to); voy a (I'm going to); deseo (I want to); debo (I must); and me gusta (I like to). A unique feature of Spanish is that you can put these five expressions in front of any verb infinitive, and you've made a whole sentence. Some useful infinitives to know are comer (to eat); ir (to go); hablar (to speak); comprar (to buy).
Learn the forms of the five most important Spanish verbs: ser (to be); estar (to be); ir (to go); tener (to have); and querer (to want). You can find these on line or in any Spanish textbook. Spanish verbs follow an easy conjugation pattern, and once you've learned the pattern, you'll be using verbs with no problem.
Take advantage of Spanish media. Listen continually to the music of Gloria Estefan, Juanes and David Bisbal. They represent three different pronunciation nuances of Spanish (Estefan, Cuban; Juanes, Colombian; and Bisbal, European Spanish), which will allow you to hear the slight differences in sounds. This will also help to cement the vocabulary that you have been learning. Watching telenovelas (soap-opera-like dramas) on Telemundo or Univision is also a wonderful way to learn Spanish by following a story line and watching context clues.