An engineering student is seeking online resources with exercises specifically focused on diodes. Several users recommend a link to a resource, but the student is looking for materials that include solved exercises, particularly involving logical gates and operating points of diodes. Despite suggestions, the student finds the existing resources inadequate, noting that they mostly contain basic examples. A user mentions finding various practice problems through a Google search, but the student has already reviewed those and seeks more advanced content. The discussion highlights the challenge of finding comprehensive diode exercises for deeper learning.