Listen and repeat after the speaker. You may look into the Russian text in the beginning, but try to do this exercise without using text support. You may also practice repeating the text with the speaker imitating his intonation.
We strongly recommend not to rush and not to make all these steps at one day. Do everything step by step and let your brain to form new neural connections. The learning process may be quite difficult in the beginning, but give yourself some time to get used to it and the results will come.
Good luck and enjoy the process!