While tools like ANKi cards have their merits, they might not be the optimal solution for everyone. In many cases creating a self-wiki may be a better choice.
Self-wiki is a public knowledge base of information you think is worthwhile and worth remembering. The approach is simple: If you find a peace of knowledge that is enlightening or feels consequential write it down in your own words. Don't just copy and paste, process it yourself.
When a note like this is published the social aspect of our brain gets activated. When one realizes others may come and see it they will regularly revisit and refine its definitions. Please come and see my wiki to make me horrified something that is off.
Traditional spaced repetition, at its core, requires us to review and repeat information regularly. But in trying to nail the "perfect" review intervals, one may be missing the point. The biggest drawback of tools like ANKi is that they can make learning feel like a chore. I believe pushing oneself continuously can be counterproductive. I think it’s not a good idea to associate learning with a tedious task. See more on this perspective here:
Additionally, the card decks you curate in typical spaced repetition software might not stand the test of time. Decks usually are used temporarily. In contrast, a self-wiki, is built for the longer timespans. ANKi cards may be better suited when somebody needs to cram knowledge in small amount of time e.g. before an exam. But for medium to long-term knowledge.