Just purchased Capsules

I just purchased capsules..this will be my first time using black seed. I have never tried anything natural and have no experience what so ever. I am type 2 diabetic and have hard to control numbers. I also suffer with joint pain (doctors had diagnosed me with fibromyagia and rheumatoid arthritis.)

How do I properly take these capsules and what dosage should I use? Thank you for your help.