Hold the work tightly to avoid kickback. Make certain your hands are not anywhere the blade will touch.
At least big enough that you can secure it safely while cutting.
The mitre saws forward and the back saws backford.
To make accurate 90 degree and angle cuts .
For speed, you would use a circular, or 'skilsaw' . You could also use a tablesaw, a mitre saw, a chopsaw, or even a reciprocating saw .
Mitre or jigsaw
You can, but an oil based cleaner would be better. I use WD40.
mitre saw,mitre gauge,measuring tape,mortise gauge,mallet
Yes
It is a mitre saw that only angles one way.
A compound mitre saw is needed because it will make it easier to make complex cuts such as crosscuts that can be essential if you are a woodworking hobbyist.
Cutting angles on wood.
Cutting angles, usually for trim and molding.