Hell yes, learn that rudder. AFTER you master your other controls. It's been said that upon landing when close to the ground you wouldn't want to bank the aircraft to make a turn to line up on center. With the exception of the deadstick, if you're not happy with the approach... GO AROUND. I consider myself in still in the Novice stage despite flying on my own for a while, but It almost annoys me to see the accomplished pilots landing and then rolling off the edge of our 300' runway!! And I'm talking about .40 and .60 sized models. Practice that rudder at altitude, and slowing work your way down to the landings. I'm sure that what I said about deadsticks made everyone wave the "learn the rudder, it'll save your plane one day" and a deadstick is one you can't go around and not knowing that rudder will probably lead to a crash. My 2 cents is why not start way before the aircraft leaves the ground and work on making your equipment as reliable as possible. A good running engine and good working equipment is the only was you'll get in the air to practice that rudder. What about a spin?? Well before you intentionally put the aircraft into a spin, learn that rudder. If your not comfortable with the rudder, avoid flying in such a way that would raise the potential for a spin. I think if you balance being conservative with the flying and being aggressive with the learing you'll find the right pace for learning every control and then some.