Begin by learning the sounds and names of the letters in the English alphabet. The Cyrillic alphabet that Russian uses is very different from the 26 letters of the English alphabet, and it may take you some time to master writing and using these letters. Search for English alphabet videos on YouTube to help you get started learning the alphabet. You can pause and repeat the letters as they are taught as well as rewind and listen to them again if you need to.
Build your vocabulary first by learning common words and phrases in English. Listen to online podcasts and videos for English-as-a-second-language students. Search for "English and audio" to find several audio resources to help you learn new words and practice your pronunciation. Focus on listening for the words you know and then for patterns of words in which the words you know are used. You will learn new words when you listen for words you know and guess the meaning of words you do not know that are used in the context of familiar words. Also, listen to authentic English recordings such as television shows, movies and radio.
Get an English conversation partner from a language exchange website such as My Language Exchange or ITalki.com. These sites allow you to partner up with a native English speaker who wants to learn Russian from you. You will meet online and have text/e-mail/voice conversations. Ask your partner to correct your grammar and pronunciation and to teach you new words. Meet regularly so that you practice your English with a native speaker and constantly improve your English skills.
Speak and write in English as much as possible. When you produce the language, do not be afraid of making mistakes. People who are not afraid of making mistakes often are more fluent than those who are. They make themselves understood even though the words they use may not be the correct ones, or their grammar is a little off. Communication is the point of learning a language. You can pick up correct grammar and new words from those with whom you speak English.