If you are talking about my build then please note that it is a very tight build, i.e. one that expects you to meet a lot of requirements at certain levels, which may be hard to do, maybe not the best thing for a first game, since you'll have basically no room to expriment on your own.
Also, it was meant for HotU mostly, because during the early levels it is a rather weak build (as the two weapon feats only come into play rather late you could be stuck with a two bladed sword without the two weapon fighting skills in the mid game). This can be mitigated as outlined above (using sword and shield), but if you play the main campaign, then you spend most of your time not doing what your character is meant to do, which seems a bit frustratin to me

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If you want to go Weapon Master in the main game, I'd recommend a progression like this:
Lvl 1: Weapon Focus, Dodge, Expertise
Lvl 2: Two Weapon Fighting
Lvl 3: Ambidexterity
Lvl 4: Mobility
Lvl 5: -
Lvl 6: Spring Attack, Whirlwind Attack
then go into Weapon Master, grab Improved Critical at lvl 9, Toughness or maybe Iron Will at lvl 12
at 15, take another level of fighter and get weapon specialisation
Use 2 short swords, which are the best of the small weapons or 2 long swords, which will mean that your attack bonus is lacking (you -4 on your AB when using 2 medium sized weapons, -2 when using small weapons), but you do more damage and the best weapons in NWN are long swords. (e.g. the Balde of the Galdiator that you can aquire comparitvely early.)
Alternatively, you could wait another 2 lvls to get into WM and use a double weapon (like the two bladed sword), which allows you the advantages of both long sword and short sword (less AB loss and more damage) at the cost of a feat (exotic weapons proficiency)
a recommended progression would be:
Lvl 1: Weapon Proficiency Exotic, Weapon Focus, Two Weapon Fighting
Lvl 2: Ambidexterity
Lvl 3: Dodge
Lvl 4: Expertise
Lvl 5: -
Lvl 6: Mobility, Spring Attack
Lvl 7: -
Lvl 8: Whirlwind Attack
Then 7 lvls of Wepaon Master WM
Lvl 9: Improved Critical
from here on you're free to do what you want.
If you want Weapon Specialisation (which will give you +2 damage with your weapon of choice) you have 3 choices:
a. Interrupt your WM progression at lvl 12 to take another fighter level and chose Weapon Spec. as your standart lvl 12 feat. Then continue with WM as normal.
b. Take 2 Fighter levels after WM7 (lvls 16&17) and take WS as your fighter bonus feat on lvl 17.
c. Take two more WM lvls as 16&17 and a fighter lvl as 18 and use your lvl 18 feat to aquire WS.
I'd prefer a. but it does mean that your WM special abillities will be delayed another level.
And finally, in answer to your original question:
You should have a decent number of skill points, probably 5 per level if you spread your abillities as I have recommended.
Lore is a great skill, since it allows you to identify items and read some mysterious runes that you come upon time and again. If you chose it, max it though since the difficulty of identifying items only increases as you level up.
Discipline is almost mandantory, though it's usually ok to be a few (1-3) ranks behind your possible maximum.
Tumble is a wonderful skill because of the AC bonus it gives you.
If you choose to multiclass with rogue, it's mandantory, if not, you should seriously consider spending cross class skill points on it.
Use Magical Device you get only if you multiclass with rogue. This one skill lets you use almost all magical items, including wands and scrolls to cast wizard spells.
Persuade: getting 12 or so ranks in this is recommended.
Intimidate: 4 ranks are required before you can take Weapon Master, so 8 of your early skill points go here.
Craft Armor, Weapons: Well, you can use these skill to change the appearence of you equipment, so if you want to do that, put points here. 5-6 ranks should be enough to do almost anything.
Spot and Listen are nice to have, allowing you to discover hidden enemies, traps and secret doors early. On the other hand, you sooner or later discover those anyway (in the official modules at least) so getting along without ever increasing either is perfectly possible.
Well, hope that helped