Welcome, Jasmine! You have joined the right community if you want to learn about Second Life. Have a look at Section 14.2.1 of Module 1.5 at the ICT4LT site, which contains a lot of introductory information about Second Life:
Hi, I'm Jasmine, I've been English teacher for five years then I went back to school for getting my master of foreign language teaching and multemedia. I haven't heard about the SL before , I'm really new for that. It's why I would like to join in this site for learning more about the foreign language teaching in SL. It sounds attracting!!