Lapistia

Can I use an Ingom?

Yes.

Does it fly?

Yes. The parameters in parentheses indicate movement speed on the ground and in the air for flight.

Can I use melee or ranged weapons while riding?

Ranged weapons, yes; melee weapons, no.

How many skill points are spent on this skill – 2 or 3?

1 is required, as with all other skills; the additional -2 is a penalty, totaling three.