As difficult as learning quantum math
As difficult as running five miles in one minute
As difficult as learning three languages
As difficult as catching a greased pig
What is the genre? that's what you first need to ask.
The correct sentence should be, "Have you read A Good Scent From A Strange Mountain (The book title should be either underlined or italicized. I prefer italicize though) by Robert Olen Butler?
Irony is like sarcasm: you can say "oh yeah, that sounds SO fun" and mean "that doesn't sound fun at all"
Irony in a situation is when, for example, you do everything you can to prevent something from happening, but your trying to prevent it is what makes it happen.
It is also a literary technique, originally used in Greek tragedy, by which the full significance of a character's words or actions are clear to the audience or reader although unknown to the character.