What if i only want to learn BLUES harmonica?

Excellent question!

Breakthrough Blues is the way to go!

Breakthrough Blues uses a systematic hand-holding approach to becoming a blues harmonica player.

• 28+ Hours of Blues Lessons
• Over 300 videos
• Bluesify Your Melody eBook
• 6 Hours of Bonus Lessons
• 180 Day Guarantee
• Lifetime Online Access

To see a full list of the Course Details:
Go to this page below ... and scroll down about halfway down the page, to the green button and click where it says " VIEW FULL COURSE DETAILS"
https://www.harmonica.com/blues/

In Breakthrough Blues, you will progress in a more step-by-step fashion as a blues harmonica player. 

You'll progressively develop your tone, the usage of blues techniques, and your ability to jam as a solo harmonica player.
In addition, you'll learn four specific 12-bar blues solos top to bottom and get an assortment of excellent bonus lessons from other teachers. 

Bottom line is I'm confident you'll get a ton out of Breakthrough Blues. Actually, students have told us that the "Bonuses " alone are worth the price of the course.

Again, here it is...
https://www.harmonica.com/blues/

Let's do this :-)