Hello,
Thank you for using our theme!
If you want to change slider images go to Dashboard > Revolutions Slider > edit home page slider > edit slides > change bg image http://prntscr.com/cjpq3o
Detailed information about Revolution Slider settings you can find here https://www.themepunch.com/revslider-doc/slider-revolution-documentation/
If you want to change breadcrumbs image go to Theme Options > General > Breadcrumbs > http://prntscr.com/cjprj5 You may use different breadcrumbs images for simple pages, just upload Featured image for your page. It does not work for Shop and Blog pages because these pages are special pages. They use breadcrumbs image from Global settings.
Feel free to ask if you need any other assistance.
Regards