For a highly detailed biography that pretty much recalls every event in the boy's life, check his Wookieepedia page -- it's way more in-depth than anything I could put together re: his life. I'd most likely miss at least a half of what's covered there. Here's some basic info about him though!

Name: Jacen Solo (later becomes Darth Caedus)
Species: Human
Year of Birth: 9 A.B.Y.
Year of Death: 41 A.B.Y.
Homeworld: Coruscant
Affiliation: New Republic / New Jedi Order
Parents: Han Solo and Leia Organa Solo
Siblings:
       Jaina (twin sister)
       Anakin (younger brother - deceased)
Children: Allana Djo Solo
Eyes: brandy-brown
Hair: brown
Height: 1.79 meters (during the YV invasion)
Weapon:
       Jacen -- lightsaber - "ice green" (Balance Point, pg 331)
       Caedus -- lightsaber - red (Revelation cover)
Likes: animals, debating with his brother, jokes, playing with brain mappers, learning other culture's views of the Force
Dislikes: debating with his brother, overuse of his power
Languages: Basic, Calamarian, Shyriiwook (can understand only)
First Appearence: The Last Command, by Timothy Zahn
Age:
    Young Jedi Knights: fourteen
    Vector Prime: sixteen
    Balance Point: seventeen
    Star By Star: eighteen
    Destiny's Way: nineteen
    The Unifying Force: twenty
    Dark Nest: The Joiner King: twenty-five
    Legacy of the Force: Betrayal: around thirty
 

These are from the New Jedi Order Sourcebook -- specifically from the Balance Point section, so we can assume these are his stats during the middle of the New Jedi Order.

JACEN SOLO: Male Human Jedi Guardian 9; Init +1; Defense 19 (+8 class, +1 Dex); Spd 10 m; VP/WP 46/13; Atk +10/+5 melee (1d3+1, unarmed) or +12/+7 melee (3d8+1/19-20, lightsaber) or +10/+5 ranged (3d6, blaster pistol); SV Fort +7, Ref +7, Will +6; SZ M; FP 6; Rep 4; Str 13, Dex 13, Con 13, Int 14, Wis 14, Cha 13, Challenge Code: D.

EQUIPMENT: Lightsaber (Jacen has constructed his own lightsaber), blaster pistol

SKILLS: Craft (lightsaber) +6, Handle Animal +6, Intimidate +3, Knowledge (Jedi Lore) +8, Pilot +7, Read/Write Basic, Ride (all) +3, Speak Basic, Speak Calamarian, Speak Shyriiwook (understand only)

FORCE SKILLS: Affect Mind +9, Battlemind +7, Empathy +10, Enhance Senses +7, Farseeing +7, Force Defense +5, Friendship +5, Heal Self +3, Move Object +11, See Force +7, Telepathy +6.

FEATS: Animal Affinity, Exotic Weapon Proficiency (lightsaber), Force-Sensitive, Skill Emphasis (Pilot), Weapon Focus (lightsaber), Weapon Group Proficiencies (blaster pistols, simple weapons).

FORCE FEATS: Alter, Burst of Speed, Control, Deflect Blasters, Lightsaber Defense, Sense.