What I recommend is purchasing a notebook with dividers and start organizing lists of spanish verbs, spanish adjectives, spanish prepositions, spanish idiomatic phrases as you come across them. This way you’ll always have a reference to go back to. And the best part of doing this is that you’ll start remembering that you had previously marked that word in your notebook and this will play into the previous study tip about repetition.Every now and then, I even like to review my old notebook and go down the lists. I started creating the lists as I came across new verbs and adjectives from my Spanish lessons, from looking them up in a dictionary in order to complete my Spanish homework, and later from reading Spanish books and novels.
Even if you believe you can rely on your memory to get you through, I still recommend making a list of words that you have the most trouble remembering.