1. How to have a steady blood sugar level all day and don't feel spaced out due low b.Sugar? 2. Just remembered about glycimic index, any connection?

Go for lower GI food. The lower the glycemic index, the less your blood sugar will swing up and then down. Here's a good search engine: http://www.Glycemicindex.Com/foodsearch.Php and it's in a superb website that can guide you to GI mastery! but generally, the more "complex" and starchy a carb is, the lower its gi.