[TRANSLATE TO RUSSIAN]
...to make sure you understand what numbers on the beer bottle means you need to know at least two of these: ABV and IBU. You can't really tell if you will like the beer, however at least you can approximately guess what type of beer it is.

IBU = International Bitterness Units
IBU is a bitterness scale: 0 - 100.
Different people feel bitterness differently, yet it's still an easy scale to understand: bigger number means more bitterness.
ABV = Alcohol By Volume
Bigger ABV means more alcohol. Usually regular mass produced lagers are 4-5% ABV. Keep in mind, that difference in this number can be quite profound.
Difference between 4% beer and 8% beer is huge.

IBU: Bitterness
There are two important factors that make beer bitter:
[1] Types of hops
[2] Boiling time
ABV: alcohol
Usually beer with lower ABV is called session beer.
Additionally beer with higher ABV is called imperial beer.
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