What is the best way to invest in your employees?

Heh. The unpleasantness of training on the job is the same everywhere. The old pros really like to go doing their job or loafing around than training a newbie. You just have to bear with it. Try to keep contacts with other newbies as yourself in the company to exchange ideas, try to ask other old pros as well, not just the one in charge of your training. IT's the reason why a good company is not that common, because the idea of careful training your newbies is something deeply rooted in its working culture.

Ideally, give them the right job to fit with their skills and motives.

Human being is the most critical factor so invest in your employees 's mindset is the good way, I think.

i, To put right persone in right place but in right time
ii, To give quality trainning for carring out the work with good out -come
iii, To establish a caring enviroment including to be respectful ,fair and truthful , help staff to develop , grow and learn - give good coaching , delegate responsibility but require accountability
iv, To recognize ,encourage ,reward often
v,To satisfy employee need
vi,To encourage physical well - being
vii, To promote creative thinking
viii, To support continous learning and training
ix, To create " partnership relationships
x,To empowe staffs : sharing power and responsibility ,trusting employee ,
xi,To buid commitment and boost morale including increased self - motivation , increase productivity , improved work performance ,reduced cost ,greater job satisfaction ,improve communication

First, Screen out carefully from the beginning of selection candidates for every position which you need.
Second, confirm the capacity of every employee by assigning work and estimate their results to know their level. And then we should encourage them who is really good, contributed much into company's development and success. And finally, trust and give them chances so that they can demonstrate and show us what they have also we need.