The player stars , and the calitate number are for total skill points, both"grey" and "white".

Grey skills gain slower than white, and which skills are grey/white is by player position.

When you train, the skills for that exercise increase, but you sometimes only get a small part of a skill point. When you get 1 total, you see "+1 skill". If you don't, then it's just not "full" yet, like a bucket. It fills up, +1, then starts again.