Not too easy. Not too difficult.
I would recommend it because it does give you background as to the grammar rules in Spanish. It tells us a reason as to why they are used and makes you be more technical when speaking Spanish. Especially when you are a native speaker where everything is said natural.
I learned quite a bit of accent marks and their rules. Also, how important the pronunciation of syllables are in words when marking accents.
Hours per week:
Advice for students:
Consider being able to take thorough tests and really study the concepts. If you are not very well acquainted with accents really study that and be prepared for the tests.