Image Gallery in structure format

Hi everyone, I need assistance in creating picture galleries in a one page website but with many 3 image gallery sections. I have my html template working but I can only get the thumbnails working but do not know how to call the pictures out in preview box or modal

Check out the Starterkit album pages for a simple example.

not helping, I do not find the album straight forward and not inline with what i want

how can i manage this with toStructure?