Mitre saws are very easy to use and give you excellent control over angle cutting. I have 2 different, one very fine cutting 9 inch Elu and a 12inch DeWalt. I couldn't do without either.
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
At least big enough that you can secure it safely while cutting.
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.