Grammar and vocabulary

I just got a Spanish grammar textbook, but I have difficulty doing the verb exercices, as my vocabulary is not the best. I can understand pretty much anything in Spanish but I have a hard time finding words to say myself in speech or in writing.

Will I learn well by searching the words I don’t know while doing my grammar exercices or do I need to get another textbook for vocabulary words?

submitted by /u/Clocks101
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