Hi ALL, I am very new to programming, i need a mentorship on how i will ADD a payment processor to my website.
What payment processor do you want to use? Every payment processor offers guide on how to integrate it with the website.
Here you can find details. You need to choose appropriate guide depending on your coding language. https://developer.paypal.com/docs/integration/web/ https://dev.payza.com/integration-tools/api
On another note, if you're planning on using it for a production website, might as well use any of the free scripts out there.
If your product is targeted to only US/CA/UK.. not all the countries, I suggest to use Stripe. I have experienced on both Stripe and PayPal, and found that Stripe API is much more easier than PayPal.