Here are some ideas for memorizing vocabulary:

- Learning words in context: Read texts that are meaningful and interesting to you, underline words, that you would like to learn and note them down with some example sentences.

- Using the words: Write  a text with new words that you want to memorize or use them while talking to a language exchange partner. If the words belong to the same topic then look for texts, videos or audio files about this topic, e.g. if you learn about the weather read or listen to weather forecasts, if you learn about food and words like cooking, cutting, etc. read recipes or watch cooking videos.

- Using flashcards: You can either write flashcards by hand or use a spaced repetition software like Anki.

- Create mnemonics: Create funny and memorable sentences with the new words that you want to remember. i love this method. Because once I have created a god mnemonic, I will never forget the word. It just sticks. Here is an explanation: https://es.wikipedia.org/wiki/Regla_mnemot%C3%A9cnica. ;