Rimember APP
Rimember can help you save such things at one place and periodically remind you via notifications so that you never forget them.
For example, let's say you want to remember that first CEO of Apple was Steve Jobs. So you open Rimember, save it in there and forget about it. You save many such things that you want to remember in the app.
Now every day Rimember will send you a notification that will show you one of your saved facts. This way you get to relearn one of your saved facts every day. Hardly 5 seconds that you spend in reading the notification will be a useful investment into improving your knowledge of useful facts.
Do make that investment.