PerfectWaist wrote:1) How many points should I spent to IQ when levelling up?
For the first several levels, you'll probably want to put everything into IQ as you'll need 24 or so points to unlock all the skills, and then those SP to get the higher level skills (especially Energy Weapons and Doctor, but you'll also want someone with Cyborg Tech and Electronics).
2) Do you need to have spare skill points in order to train basic skills through use?
No. Learn-by-doing doesn't require any SP. It does
factor in the difficulty you're testing against (or the foe level for combat skills) and your Ranger's level, though. A level 3 Ranger can't raise a skill above 3 through use, for instance.
3) How much should a casual player care about the special skills (besides combat skills)?
Some of the other skills are very
important. You'll want Medic on everyone. The person in the #1 slot should have Perception and probably could get some use from Silent Movement. You'll also want Picklock and Safecrack on someone. Climb and Swim are other skills that it's good for everyone to have. Giving everyone Acrobatics 1 might not be a terrible idea.
Other skills are a lot more situational. Personally, I like someone to have Cryptography (only one major use, but it's a pretty handy one), and I like to give the Ranger with Cybertech a level in Forgery, too (makes a puzzle easier to solve).
Beyond that, it's personal preference. Metallurgy has a single use, but it can be fun. Some people like Gambling. Clone Tech is neat and Toaster Repair is one of 3 ways to get a critical item for beating the game. Bomb Disarm has a couple uses, but it's not required.
For combat skills, the progression I usually follow is Clip Pistol -> SMG -> Assault Rifle -> Energy Weapon. I generally skip rifles completely because their usefulness window is pretty narrow. Giving everyone Brawling 1 wouldn't be amiss either, even if they're going to be using firearms.
So, with a brand new character, IQ 16, I would select a skill load-out like:
Clip Pistol 1
And I'd still have 9 points to put into other skills or to improve some of those six I've already picked (Clip Pistol and Medic being the likely choices).