Does anyone know where to find material where I can have a north of how to make this color effect in the photos and how to divide into 3 columns with texts on the background image?
There are several ways to apply effects to photos with css. You can try with the filter property or apply a gradient to this example.
Filter property: link
About 3-column division, the most popular and easy way to work today is with Grid or FlexBox systems (Supported in some browsers only in the latest versions).
BootStrap has a 12-column Grid system that's easy to work at a glance.