1.) Experience.. been reading though UFOpeadia on the subject but still abit confused on the subject. "Every time a Primary Action is taken, Primary Skill Points are earned" am i to take that as "taking a reaction shot, firing, stunning, throwing, using psionics & the game enforcing a bravery check on said soldier" is what that means? and if that is the case, can you then blind fire into blank space with soldiers three times to gain the experience? from just outside the skyranger? or do you need to be doing the "Primary Action" towards an enemy?
With the exception of morale and throwing, most of the primary actions only award experience checks when used against the enemy. You shouldn't get anything from allies, civilians or scenery.
It goes:
Reactions - Increments if you qualify for a reaction shot during the alien's turn. You still earn the check if the triggering alien is killed before you can fire a shot.
Firing Accuracy or rather the 'successful hit' counter - increments per hit on an enemy with a bullet or area-of-effect attack. If memory serves, there's a bug in the original game that awarded a point to anyone that sets off a live proximity mine.
Melee - increments on each successful melee hit on an enemy with a stun rod.
Throwing - increments by simply throwing stuff. Anything. Anywhere.
Psionic Skill - increments by using a psi-amp attack on an alien. A failure is worth 1 count, a success is worth 3.
Morale - increments every turn you resist panic while under 50% morale.
Unless I missed something, I think that covers most of it.