Hi, you still seem a little dubious about what to do. First I suggest you ask your tutor how they want footnotes to be included, each tutor/college has their own system. But a general rule is:-
Type your quote in speech marks to show that it is a direct quote e.g. "the quick brown fox jumped over the lazy dog." click on the link for footnotes on your computer and the cursor will 'jump' to the bottom of your page. To the left will be the number of the quote. First put the name of the author, surname first, then the name of the book either in italics or underlined, then the publisher, where it was published, the date it was first published and finally the page number you located it on.
Here is an example:- Bradbury, Malcolm. The Social Context of Modern English Literature. Basil Blackwell & Mott Limited. Great Britain. 1971. Page xiii.
I hope this helps, if your still uncertain then Google ‘footnote referencing’ and I’m sure you will find a site that will point you in the right direction. Good luck with your essay.
ps apologies I couldn’t put the title of the book in italics or underline it.