Actually, I have a small container home in Canada.
Built it last year. I had no skills or expertise in construction. Just watched all the youtube videos I could and talked to some guys who already did this.

But still, I messed up many times and spent much more money and time than expected.

However, one good decision I took which made my home livable is the use of new containers (Bought from a shipping container company in Toronto).
If any of you're trying to build a container home for the first time, I would recommend buying new containers. Using used ones will give you more trouble.