How can I upload images to Pinterest? Noob Here

Should I post them directly from my website? Or can I make an image irrelevant to the image that is in my blog post but will still be relevant to the blog title?

Must I upload the image I want to appear on Pinterest to my website before I publish it on Pinterest?

Thanks!

Look at the accounts that have a lot of followers and follow their example

@papux - You can upload images directly to Pinterest i.e. from your PC/mobile device i.e. they do not need to be uploaded to a website first.