There're not that many rules for reading in Russian, as well as there's no real way to predict the stress position in a word. But there're 3 basic points that one has to keep in mind. For instance,
Why does "o" sometimes sound as "a" in Russian?
1. You read О as О when it's stressed;
you read О as А when it's not stressed.
3. When Е or Я aren't stressed, you'd often read them as И.
Here in this video, you can practice these basic rules through reading a simple dialogue in Russian:
To check the stress position in Russian words, you can use this site.
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