General tips for better quality knives:
- Hand wash and dry, no dishwasher
- Use a good cutting surface that is easy on your edges. Wood, preferably end-grain, or synthetic rubber like Hi-soft or Sani-tuff.
- Keep it sharp. The steel used for that knife responds well to use of a kitchen honing steel, so you can use a steel to straighten the edge between full sharpenings.
- Don't store it loose in a knife drawer with other utensils. You can use either a drawer insert with slots, a magnetic strip on the wall, magnetic knife stands, a wood or bamboo knife block, or individual blade guards.
Learn decent cutting techniques for whatever food you plan to be cutting. Lots of good You-tube videos (and some not so good) if you need to learn some. German chef's knife profiles tend to favor rocking, which is not a technique I use much, so I personally have trouble using knives with the longer curved belly and high tip.
Keep in mind that the Henckel's "International" brand is their value line, usually made in China or Spain. Their better stuff is made in Germany. It's still a decent knife, it's just not a higher-end knife. I think the Classic line is made in Spain. They use German steel (probably 1.4116 = X50CrMoV15). There is some discussion of them in this older thread:
https://www.bladeforums.com/threads/henckels-steel-type.1370812/, probably around 55 HRC max hardness.