Idioms in language I find most fascinating. Can I give you an example from German?
You don't say "Ich mag Deutsch lernen" when you want to say "I like learning German." The German verb mögen is used with nouns.
"Ich mag die Farbe Blau" = "I like the color blue."
But --
"Ich gehe gerne spazieren" = "I like going on walks."
So, "I like learning German" is "Ich lerne gerne Deutsch." Or you could say, "Ich lerne sehr, sehr gerne Deutsch." Meaning, "I really, really like learning German."
However you say it, I hope you're enjoying whatever language you are currently learning!
(Übrigens, es gibt keinen Unterschied zwischen "gerne" und "gern." Du kannst beide Varianten benutzen.)