Currently, we have a Lervia 564 sewing machine, and a Singer 4423 Heavy Duty machine arriving soon. Users that are not competent at using a machine are required to take an induction, as much for the machine's safety, and that of your fabric, as your own.
Lervia 564 sewing machine
A LIDL-bought sewing machine, fairly basic, and usable - a good starting machine.
Singer 4423 Heavy Duty
This machine is a heavy-duty machine, and is more of an 'advanced' user machine. Some reviews quote it as going through upto eight layers of denim without a problem, and the machine is even able to cope with thin leather.
Quick Start guide -
Full Manual -
Service Manual -