from e-learn spanish language website, i learned that you should learn pronouns first before verb conjugations because the pronoun forms (and nouns) determine how to conjugate verbs.
i purchased at costco (yes!) Instant Immersion. i researched this program before. on amazon, this program has nearly a 4-star rating with 133 reviews. not as robust or functional as rosetta stone, this program apparently is adequate for beginners. in addition, it was only about $29 with tax at costco. it's latin american spanish and mac and pc friendly.