How can I contribute to the website?

Get the git repo, find out what source files correspond to what you want to change, make the change, commit with a suitable message, make a pull request for your changes.

If your changes are large, you're best off discussing it first here to ensure the change is wanted.

I have git installed now how do I clone the repo?

git clone github.com/monero-project/monero-site

Thanks! Downloading now.

Before I commit would I have to create a new branch?

Yes.

Ok. Thanks for all the help!

Make sure you read the README for instructions on how to add all the proper things for translation and front matter, etc. It's all laid out pretty clearly.