No but you do need to study about plumbing. You can find places where you learn imparticuarly about plumbing.
Same as all other plumbing in civilized countries
Not necessarily, depends what and where plumbing work is to be done. Check with local plumbing authority about needing license or not. Sometimes you need license to pull permits to do plumbing work. Plumbers usually have at least a journeyman's license.
Soldering is generally used when doing plumbing work, so having a background in plumbing would be an asset. However, if one was to purchase a soldering iron and read the instructions, one could then go about soldering.
The only plumbing work that you are allowed to perform without a license is for your own property.
One can purchase plumbing software at a variety of different retailers. One can purchase plumbing software online at websites such as FieldAware and Skeds.
one it has to work
Typically a plumber will be well versed in all plumbing matters. They don't usually have a specialization in one particular area because plumbing and piping are relatively similar from room to room.
Plumbing contractors who are unionized can be contacted by reaching out to the local plumbing union in your area or by checking on plumbing contractors in the white pages.
One can buy laser levels from the building and construction work specialists. Laser levels are used for plumbing work, diy, electrician, kitchen installing, and building or concreting.
There are contractors available that do plumbing, heating and electrical jobs. It is best to look in your local yellow pages to find a company you trust.
Yes one can study puberty. Every year many people write papers on puberty.