This is the 9287th most frequent Russian word.
старайтесь
"Старайтесь" means "make an effort" or "try" (imperative, formal/plural).
The word "старайтесь" here is used as a polite command or encouragement in a general sense to strive or make an effort towards a positive action.
Всегда старайтесь помочь другим.
Always make an effort to help others.
In this sentence, "старайтесь" is employed to advise or suggest striving to adopt a specific recommended approach to learning.
Когда учитесь, старайтесь концентрироваться на главном.
When studying, try to focus on the main points.
Here, "старайтесь" is encouraging a conscious effort towards safety and attentiveness in a practical scenario.