Where can I test my computer skills?

Question

Iron

It has long been thought to open your own personal computer service office, and there is knowledge in this matter, but I want to check whether it is enough to provide full user support. Actually a question: where it is possible to check up not in field conditions? Are there any online tests or something like that?

Answer 1

You get a job in such an office and you will understand everything there.
What is that supposed to mean? More precisely, the desire is clear, the list of services is not clear.