Russian word stress

When speaking about good Russian pronunciation, people rarely think about proper stress. However, stress appears to be one of the most common problems not only for beginners but also for advanced Russian learners.
The first most common problem with this stress thing is that beginners often emphasize wrong syllables, which is usually fixed with practice and vocabulary expansion.
But proper stress is not only about where to put an accent mark but how to do it.
Usually, Russian learners emphasize the stressed syllable exactly the same as they would do it in their native language which, to tell the truth, sounds not exactly the same as Russian native speakers do things. And this causes an accent.
Also, when you start learning Russian grammar, you discover (with astonishment) that Russian stress is mobile. It can move in the same word when this word alters in different cases, conjugations, number, genders… which some people find pretty confusing.
Plus, when learning new words, you realize that stress sometimes influences meaning. There are words that are written exactly the same but have different stressed syllables and, therefore, have completely different meanings.
So, yes, Russian stress is very important and incredibly astounding!