I've a Trello personal board with To-do, Doing, Done lists along with a 'To read/watch/listen'. I send everything interesting that I see to the To Read list and once I finish going through an item, if it's interesting enough to be saved for later, I send them to Pocket and tag it appropriately. I've a special tag called 'Toolkit' to save frameworks and other techniques that I cross-tag with other generic tags. I also add notes for videos, podcasts etc as comments.
Right now my Trello board is organised based on the work I need to do for a week. I haven't really experimented with changing this frequency though as it pretty much works for me now. And a lot of times, I need to sub divide my weekly tasks and for that I use checklists. When needed, I create separate reminders for these sub tasks using the Reminders app(primarily because it is super fast and syncs well across my devices).
When I need to look for something, I first use Spotlight to search for it as it can search across all of these apps. Works most of time, but I have to search individual apps for better results at times.