Last week I was exploring the options to show a context sensitive pop-up in record detail pages. The pop-up needed to use the sObject name of the record that was being visualised in the detail page. I wanted this functionality to be available in classic and Lightning Experience. So I spent some time exploring the options that we have to do this. Are Lightning Components ready to fulfil my requirements?
Somebody asked me which trailhead modules could help for obtaining platform app builder certification. What I have done is to elaborate an index of them, in order you can practice some of the concepts that are asked in the certification. Obviously, doing this modules is not enough for passing the exam. However it is a good start point. Here you have my index: