Job: Your profession.
PK Points: Killing players increases this. But it will decrease slowly over time.
Spouse: Your wife's / husband's name.
Guild: Shows your guild name.
Position: Your rank within the guild.

Strength: Determines attack damage. Weapons have strength requirements.
Agility: Determines attack accuracy. Weapons have agility requirements.
Vitality: Determines hit points. The higher it is, the tougher you are.
Spirit: Determines magic strength. The higher it is, the more powerful spells are.

Attack: Physical attack damage.
Defense: Defense vs. physical dmg.
M-Attack: Magic attack and damage.
M-Defense: Defense vs. magic dmg.

Equip: Drag items from pack to the equip slot or right-click items in pack.
Un-equip: Double-click on the item you want to put into your backpack.

3. Skills: In the Skill tab, you can see the weapons that you have trained in, and how good you are at using them.

There are three categories of weapon: One-handed, Two-handed, and Other, displaying specific weapons you have used under those three categories.

Type & Level: Click on the weapon icon to display the skill details. You can see the skill name and the level you have with that weapon.
Experience: It shows the percentage of experience points you've acquired towards the next level with the weapon.
Improve: Proficiency can be improved after char level fulfils this prerequisite.

4. Spells & Skills: The forth tab opens the Skill window.

Click on the icon of a skill. In the space above, you will see the skill name, your skill level and experience needed to progress to the next level of skill.

You can find three buttons: Skill, Magic and XP, displaying specific skills you have learned under those three categories.

The details of each skill is other identical to any weapon skill your character might have.