Even now in the age of digitalization and online learning, one should always have paper exercise books and vocabulary exercise books alongside all other online tools and platforms they learn from. Adult learners usually dismiss the usage of paper notebooks and exercise books, thinking that they’re only for kids learning in school but it’s a mistake. Writing requires different parts of the brain to be activated than just reading, watching, or listening to the material, and usually, words and expressions can be remembered better when we write them down as well.
Also, a typical mistake to rely heavily on online dictionaries and not have a physical dictionary book. This becomes a problem the more you advance in your learning. A monolingual dictionary is essential in the advanced stages of learning as not every word in every language can be easily and exactly translated into a word in another language. Also, the simple act of looking up a word in a physical dictionary can help in remembering.
Practicing with others has great benefits even if they’re not native speakers. The engagement and the need for communication help in the retrieval and retainment of words and expressions.