One thing he didn't mention that helps is learning and reviewing similar things together. If you learn things that are too similar at different times they can

One thing he didn't mention that helps is learning and reviewing similar things together. If you learn things that are too similar at different times they can interfere with each other; proactive and retroactive inhibition. If you link them and learn them together, they will not only not interfere with each other, but can help reinforce each other.