In my humble opinion there are 2 ways to work in the VMware field:
1. design, install and sell vSpere environments
2. operate existing environments and maintain them.
To get a decent job you have better chances with option 1.
For this field read all documentation, best practice guides and try to get certified as VCP as soon as possible.
Install vSphere as often as possible, practise updates, learn how to use the HCL so that you can quickly decide wether physical hardware will work with version XY...
If you want to know how VMs work, how Datastores work and how to fix broken VMs then I highly recommend to NOT read the manuals and documentation before you understood the basics using your common-sense.
Instead use WinSCP and inspect VMs you just created.
Start for example with the simple question: what are all these files good for ?
Why does a VM look different when checking with WinSCP than it looks when checking with the vSphere-webinterface.
What happens if I rename one of the files ....
Read log-files ...
Read a lot of posts here and see how experienced troubleshooters here attack problems ....
Be very careful when using third party blogs when searching for solutions ...
Finally learn from the mistake I made: if you want to be able to get a good paying job definetely go for option 1.
Option 2 is good if you consider VMware as a hobby ... but it may not help to pay your bills.
Ulli