Where can I learn how to use statistical packages like Stata, SAS and SPSS

You can visit the UCLA ATS statistical computing web site at https://stats.idre.ucla.edu/stata/. That site has numerous pages about SAS, Stata, SPSS, as well as specialized packages like HLM, MPlus and SUDAAN. There are pages at all levels, from the Starter Kit pages that help you get started, to online Seminars (with movies).

For UCLA researchers (e.g. faculty, graduate students working on publications or dissertations), you can learn about the statistical consulting services at https://stats.idre.ucla.edu/contact. Unfortunately, such services are not offered for homework, class projects, or other class related questions.