Any good quality hand-held cutter will serve you well. Dipping it in some sort of lubricating agent will
make it last longer and cut cleaner. You don't need any specialised oil in my exp. I go for Mineral Spirit
if I use some at all. And you generally don't have to keep dipping it.
The other parts of the equation are the straightedge and cutting surface. The latter should be flat as possible
and a soft surface is nicer to work on. A lot of folks go for carpet which is fine but should be kept free of splinters.
(If you have a good cutter you shouldn't get splinters).
A non-slip straightedge is good to use. Some people go for a T-square which is easier to hold in place. You can
get squares specifically made for glass cutting.
If you cut large sheets regularly, then a wall-mounted cutter is handy. Scoring long cuts (36"+?) is quite awkward
with a hand held cutter unless you have arms like a gibbon.
Don't press to hard. Don't score over the same place twice. It's largely a matter of confidence.