Hi Elena,

Entries like this could be better-answered in http://www.italki.com/answers/ :)

Like & Would Like

like & would like
When do we use it?

like refers to "always"  (no)

would like refers to "now" & "soon" (no again)

Sorry, it's not really a matter of "when".  Use like to express something you enjoy in general. It's a fact.  I like to dance. I like pizza. I like my workmates.

Use would like to express something you desire to do or have (you give a hypothetical idea here).  It's often used in polite requests. I would like to dance. I would like some pizza. I would like nicer workmates.

Hope that helps! :)