Q. Where can I find a tutorial on MLA style?
Try the Purdue Online Writing Lab (OWL). This is the link to their MLA guide: https://owl.english.purdue.edu/owl/resource/747/01/
I also suggest you try this site from Easy Bib - https://content.easybib.com/citation-guides/. It's just a guide. Using EasyBib to manage MLA citations is free if you sign up for an account with your email address.
Waterfield Library also has copies of the most recent styles guide, including MLA. They can be used in the library only.