Sure.
Strength is physical strength. Higher strength lets you deal more damage with melee attacks and lets you resist certain affects (like knockdowns or grapples). Certain weapons, armor, shields and other items require higher levels of Strength to use/wield them effectively as do certain Skills (even certain ranged weapons like composite bows or even regular bows require physical strength to wield). For instance combat Skills like Power Strike (makes your attack deal more damage) or Guard (if used on time reduces damage from any attack in the event that you don't dodge, quite useful actually) require more Strength as do many (if not all) martial arts or weapon techniques and other such melee oriented techniques. Even the Dexterity oriented melee techniques still require physical strength in order to be used and even some magical techniques require physical strength in order to handle them.
Strength also increases your Resilence by 1/4th of its value and your HP by twice its value and when performing physical oriented tasks prevents you from getting fatigued as quickly and makes some tasks easier for you. For instance some acrobatics rolls or other acrobatics oriented tasks (like jumping for instance) can actually be made easier if you have more Strength.
Dexterity, or DEX, represents speed, reflexes, and coordination. It is a heavy determinant on the effectiveness of melee attacks on whether or not they will hit. Speed oriented techniques require higher levels of DEX as do certain Ranged Weapons. It affects accuracy for all forms of ranged attacks including magic spells and other such things as well and your effectiveness in dodging them. Dex also affects certain coordination oriented tasks, like Slight of Hand or Manipulate Device (which is trap disarming and lock picking). Some other Skills or Techniques that aren't necessarily combat based may require Dex as well or even magic techniques may require a little Dex.
Vitality, or VIT, represents stamina, toughness, and health. It is a heavy determinant in HP as it increases your HP by not only twice its value, but also increases your HP by an amount equal to 1/2 of its value times the number that is your current level. It also determines defense, increasing Resilience by 1/2 of its value and resistance against many Status affects. Vitality is required for a wide array of Skills like some combat Skills, certain magic skills, and other such skills that use your body's inner or outer strength or energy. Its hard to define what Skills that Vitality is specifically meant for, but lets just say if you like living then putting points into VIT is a must (not a whole lot, but I recommend having AT LEAST Vit 10, VIT 8 if you really want to use your points in other stats)
Intelligence or INT determines knowledge, smarts, memory, brain power, and other such cognitive abilities. It helps with magical defense (not as much as Wis) and your current MP (also not as much as Wis), but it does grant more Talent Points for every 3 Points you have in it. For Magic spells and other such things Int is a large factor in their power and strength and Magic does require Int. Essentially if a mage through and through is what you are aiming for Int is your Stat. Some special techniques though may require Int though due to the knowledge needed, like some martial arts disciplines. Intelligence does help resist certain affects (mainly Illusion) and is used for many skills like Negotiation and other such things.
Wisdom or WIS determines willpower, focus, mental awareness, and concentration. It is the prime determinant in both MP and Concentration (magic defense) and also is used for resisting mind affecting abilities. Wisdom's purpose in terms of abilities is more focus or concentration oriented Skills rather than magic. This includes some martial arts techniques, energy manipulation or bending, or other such focus and concentration based abilities. For instance many of the mana base abilities right now since they are about energy manipulation actually use both Wis and Int rather than pure Wis (although those that have Energy abilities those use just Wis, see there is a difference).
So Wisdom is useful if you want to use energy or mana manipulation based abilities rather than magic (not that Wis isn't useful for magic) as some special magical abilities do require a bit of Wis (like if you want to be a mage a Wis of at least 10 is recommended).
Luck is as it sounds, it determines how lucky you are. It is used in random chance abilities or instances like determining the outcome of certain situations, getting Items from enemies, and can help some tasks be generally easier. While Luck doesn't have the biggest of uses, it isn't bad to have about 5 to 10 points in it.
Luck also has one other GIGANTIC use, but I actually can't spoil that for special plot or character reasons if the use is ever discovered. Hope you'll understand.
There is no actual Charisma Stat. Instead its just determined by how your character acts and yes their appearance. Certain attempts at Negotiation are easier if your character is just more likable or more attractive. Also how your character talks as well, like if your character acts like an idiot or is socially awkward (Mike for instance) then naturally people will find it harder to like you. As such the reason why there is no Charisma stat is that its always fluctuating and is really just a Role playing number that is determined by how you play your character (but act realistically as your character would, don't suddenly become some pretty perfect person).
Your characters will be getting alot of these and certain Skills will be obtained based upon how your character is. Of course in the beginning you might be getting similar Skills (like yes, Sasha could get Mana Focus if she puts a few more points into Int, Wis, and Focus and then experiments with Mana and gets a good result or maybe asks Ren to teach her), but as the game progresses you will either be getting special Skills from Skill Books or having people teach them to you or unlocking Skills that are special to your character.
Talents are important as well. And I didn't want to spoil this, but you can get NEW Talents. Certain books you stumble upon can grant you new Talents like a spell book would grant you a talent based on the magic you learned or learning a martial art discipline a Talent related to that. Of course there are plenty of Skills that can be used without these hidden Talents, like Sasha wanted Mana Blades you could get that with the Talents you have now. Of course for some Talents to be unlocked you need to have reached Ranks in certain Talents.
Like for Martial Arts disciplines or styles you might need certain levels in Fisticuffs or Melee Weaponry (or both) or for beginner magic talents you need Knowledge Rank 10 is one of the main requirements. For Gun Proficiency at least 10 in Projectile Weaponry is required (yes, Gun Proficiency is a Talent, you do need it to wield Guns).
Even things like Performance is achievable if your character ever picks up an instrument or Animal Handling if you bring around some form of pet or animal with you into battle and read up on how to train a pet.
