When you are starting out learning Spanish and aren’t familiar with common words that are used, a Spanish frequency dictionary can be a great help. These typed of dictionaries contain the most commonly used words in Spanish based on how frequently they are used in conversation and in common texts, such as newspapers.
They give you a quick appreciation of how the language is used in everyday speech and by studying the most common words and using them in a sentence you will quickly grasp the basics of conversational Spanish.
When you don’t understand how a word is used you should ask a native speaker to use it in a sentence. Then create your own sentences and ask them if you are using the word correctly. Doing this for five or more words a day will improve your vocabulary quickly.