Simply treating your edged weapons with respect and care will easily keep them looking brand new for many years to come.
Every sword owner should respect and take great care of their weapons. Swords can be damaged easier than you think and although they are made of strong metal they will get scratched and dinted if struck against something equally hard. Do not strike your sword against another sword or against and hard object.
The sort of parrying you see in theatrical sword fights are not the way the sword was designed to be used. Theatrical swords have a very wide and blunt edge, this helps protect them from damage when striking another sword. Your sword on the other hand has a very delicate and sharp edge. It was designed for cutting, slicing and slashing.
Always use your newly purchased sword for its intended use, ie. do not try to cut down a tree or hack a shopping trolley to bits. Doing so is neglect to your prized weapon and will result in it being badly damaged. If you want to practice cutting movements with your sword use either a plastic bottle half filled with water or branches from a bamboo tree. Both of these or not as stable or rigid as a tree or other heavy object. Striking these objects will not cause the blade of your sword to bend or warp and you can still effectively practice your sword style.