I have trouble on thinking about how to learn and know my latin vocabulary. Can someone please help me?
Try a flashcard site/app, like Quizlet (my personal fave) or Anki. Write down troublesome words and repeat them periodically until you know them - keep a notebook. Label things around the house if you'd like. And so on. :)
Best of luck!
Volgav vitsenanieff nivya kevach varatsach.
Like ARCANA-MSVA said, flashcard sites are really useful for that. I usually use memrise and put together a set of cards with the words from the duolingo course, in case you want to give that a try (though there are probably similar sets on other sites). Here's the link: https://www.memrise.com/course/5540236/duolingo-latin/