You're young yet, niemiro, with many years in front of a computer ahead of you. Getting a decent chair was a wise move. Should you start noticing arm, wrist, neck pain, consider making changes. The things is, what works for one person, may not be applicable to another, whether due to height, size, vision, etc. For example, a lot of people ask about using the split keyboards. For people of a "normal size" who would end up keyboarding with their elbows pointing away from their body, those keyboards aren't really recommended.
I've been using a keyboard for, well, for a very long time, starting with a manual typewriter. As a result, it has taken a toll on my hands and arms. Having had ergonomic reviews and later ergonomic training, I'm very careful with my setup as I know the results of a short time in the wrong position. As a result, I have a couple of "comfort curve" keyboards, located at the proper height for me and the monitor is positioned at the correct height to avoid neck pain.
