Minmus has a 6 degree inclination, but a perfectly circular orbit (eccentricity = 0). It's easier to get to than the Mun in the early game because despite having a orbital radius about 4x that of the Mun, the lower gravity means you can get from a low kerbin orbit there and back to a LKO with about 2/3 the delta v as you need for the moon. The lower surface gravity also makes it much more forgiving (0.05g vs 0.17g).
KSP is a great game, I highly recommend it for anyone and everyone over the age of 10.
I really should contribute a demotivator to the thread someday, I gotta owe at least 5 in back taxes...