both, although the second type you mention just happens on the job, there isn't really a "get better at everything" class, that's just called work experience.

both, although the second type you mention just happens on the job, there isn't really a "get better at everything" class, that's just called work experience. training classes for specific software is either free (depending on the type of business relationship between the two companies) or $500-$5k with a big cluster around $1500. anything outside of that range is really rare. hotel/flight/car is usually about $1k+ combined in the US. classe usually last a day or two.