Except that 5V/100k = 50uA and not 500mA 
Yes, but for pnp you should reverse voltage source symbols or change their values to negative.
Read once more:
You used pnp and made GND being (-). Wrong.
Yes, and he used a current source instead of a voltage source with base resistor, and he put it on 5V instead of GND. Just details.
The bigger problem here is that henkjan has some trouble with keeping NPN and PNP transistors apart.
Yes. All these are details.
But it is hard for me to treat 10 000 times higher current as detail so I have mentioned this one parameter, but with
You are correct to want to validate the models. The typical approach here would be to solve a basic transistor circuit by hand, and then compare the simulation results to it. If you cannot confidently solve this basic circuit by hand, then if you jump into a simulation you are walking into a minefield.
The questions you are asking seem simple, and to an analog electrical engineer, they are very basic. However, they are not really that simple and unless you work develop a little more understanding of basic bipolar transistor operation, there will just be this constant back and forth because each short answer will lead to another question.
Normally I would recommend a text like Sedra and Smith’s Microelectronics, or perhaps The Art of Electronics by Horowitz and Hill. If you don’t want to go there, try here: https://www.eevblog.com/forum/beginners/.
John
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