This page outlines some common Russian words to kickstart your Russian knowledge.
The first step in learning any language is to learn some basic words, and Russian is no different. Such words are common because they are important, and they are heavily used in speaking the language.
Until you can speak Russian fluently, knowing some regularly used words will help you to pick up the general nature of conversations. Always remember that the purpose of a language is to enable two people to successfully understand each other. It doesn't matter if you can't speak fluently yet. Learning just a few words will allow you to understand any Russian speaker much better than before!