The leading brand of sewing machine is Singer, a company that has been in existence since 1851.
Brother brand sewing machines are widely considered to be the some of the best made.
Generally, you'll need industrial sewing machines such as the Consew brand. They can be more expensive, but they sew faster and are more durable than home machines.
One can purchase Brother sewing machines directly from the manufacturer, Brother. They may also be purchased at Walmart, Target and Joann's in addition to Sewing Machine's Plus and Costco.
Viking sewing machines are manufactured in Huskvarna, Sweden. The Viking brand is owned by the VSM Group AB. Viking began making sewing machines in 1872.
I believe "Domestic" is/was a brand name manufacturer of sewing machines, i.e., a competitor of the "Singer" company.
Viscount if your looking at older machines, Kenmore for the 1990's. But if you can afford it Singer is the best brand of sewing machine.
If you mean models of sewing machine, probably hundreds. Singer started in 1851 and made many industrial models as well as home sewing machines.
Juki and Brother make sewing machines that are good.
Sewing machines are very heavy. As such, there is no such thing as a portable sewing machine.
Some of the more popular brands of commercial sewing machines include Brother, Kenmore, Consew, Juki, Mauser and Tacsew. Commercial machines differ from others becuase they can handle different types of materials.
Yes, new sewing machines come with instructions.
Present day sewing machines are complex electrical machines.