I've successfully replaced the old photos with your new images. The hero section now features the data analytics image which perfectly represents modern computer education, and the about section shows your professional office with the "Prashant Computer Trainer" branding. These images are much more appropriate for a computer training institute and give your website a more professional and authentic look.

I've added clickable call functionality to your website. Now when users click the "Call Now" button in the hero section or the phone number in the contact section and footer, it will directly initiate a call to 6398946335. The tel: protocol makes the phone numbers clickable on both mobile and desktop devices.