ESL Discussion

Hello, 

I am a Slovak person and it is quite hard for me to understand a countability of nouns so I have a questions for all of you. 

1. Which aspect (parts) of countability grammar do you usually teach? (countable, uncoutable dividing, nouns that can be both countable and uncountable, .....) 

2. How do you understand a meaning of countable and uncountable nouns in your own words? What are they about? What do they say? (meaning=core, basis) 

3. What are these nouns for you? And how do you have them in your own language? 

Thanks a much!