I don't know much about how SBI works, but I do know about Ken Evoy's talent for producing a great product that people rarely ask for a refund on. I own a few of his products myself. So, you can definitely count on SBI being capable of doing what it says it will do. I'm sure the SBI users here will give it the thumbs up.
I'm not sure a refund is the answer. That's just a frustration thing.
Like anything else, it does require your attention. Trying to do too many things at the same time can only result in a less than satisfactory result in EVERYTHING that you're doing.
Maybe if you cycle what you're doing for a while, you will start to see the kind of progress that will spur you on. Doing this stuff is hard work anyway, so if you're making it harder by trying to focus on too many things, you're making it easier and easier to give up.
Obviously, your college stuff is too important to put on hold, so how about putting your blog away for a week and see how you handle the courses and your SBI stuff, just until you get over this current hurdle?
And nobody here is going to get annoyed with you for asking questions. I personally might not be able to help with specific questions about SBI, but others can, and if there's anything I can do in other areas, such as header graphics or proof-reading or whatever, just ask. That's what this site is all about.
Don't give up! Look forward to looking back in a year's time and wondering what all the fuss was about!