Firstly, I know that people will say that this is a repeated question but all previous versions of this question are either out of date or broken/partial.
I have three main questions:
1. Where can we actually download the correct zip file from?
2. Which directory do you upload it to using the file manager (or FTP) assuming they are the same thing?
3. Is extraction the final step? Or if not, where do you install "Composer"?
Thank you in advance for your responses, but please be clear in your answers.