How to position a quote in a critical essay?

I am working on an essay due for tomorrow and am wondering about what the best ways are to position a quote in a critical essay. I cannot have an opinion in the essay, and am working in standard grade if that helps.

Thanks in advance.

What is a VPN?

VPN is (Virtual Private Network) were first used by companies to enable their employees to securely access internal systems such as email remotely (e.g. from home or while on business trips). Today they are increasingly being used for personal use by individuals to protect their privacy while online in public places (e.g. when using the wi-fi connection in a cafe) or in a country where the internet is censored / blocked (e.g. China, Saudi Arabia…).