Moleskine is a brand of notebook that comes in various formats, sizes, and papers. The covers are usually black leather (some special editions have silk, for instance, and diaries come in red) and there is an elastic band for keeping it closed.
The GPA that reflects those course choices is the weighted GPA and the GPA that considers all courses as equal is the unweighted GPA. With a few exceptions (University of California schools, notably), schools all use unweighted GPA in college admissions decisions.
Your GPA for that semester is 3.0 - or a B. Cumulative GPA is just taking ALL the grades or points from courses you have earned to date toward a degree and divide by all those same hours. Your cumulative GPA is your total GPA (the GPA you've accumulated). It should include all classes (unless you retook a class). If you have been in school one year and first semester got a 3.0, then second semester you got a 4.0 and you took 6 credits both semesters then your cumulative GPA is 3.5.