You should have noticed that in the download page there is a description of an optional TTW esp called "TTW_Bobbleheads.esp", but it only says what the Repair Bobblehead does so you might not be sure if you want to use it or not.
That's why I collected all of the Bobbleheads and made a small list of what bonuses they give, the spoilers are the actual value of the bonuses in case you want to know it more specifically.
Special Bobbleheads:
Strength
"It's essential to give your arguments impact."
You can carry more things
[collapsed title=Spoiler]You can carry 25 lbs more.[/collapsed]
Perception
"Only through observation will you perceive weakness."
You find it easier to hit enemies using ranged weapons.
[collapsed title=Spoiler]Reduces spread by 10%[/collapsed]
Endurance
"Always be ready to take one for the team."
Your body is tougher.
[collapsed title=Spoiler]Your DT increases by 5[/collapsed]
Charisma
"Nothing says pizzaz like a winning smile."
*Not implemented yet* Your friends will help you more in combat
Note: Since it's not implemented it is still giving the +1 Charisma.
No Spoilers for this one.
Intelligence
"It takes the smartest individuals to realize there's always more to learn."
You learn things easier from experience
[collapsed title=Spoiler]Each time you level up you get 1 more skill point[/collapsed]
Agility
"Never be afraid to dodge the sensitive issues."
Your Vault-Tec Assisted Targeting System™
needs less time to recharge
[collapsed title=Spoiler]Your AP regenerate 10% faster[/collapsed]
Luck
"There's only one way to give 110%."
You can hit them where it hurts
[collapsed title=Spoiler]Your chances of critical hit increase by 50%[/collapsed]
Skill Bobbleheads:
Barter
"Never forget to walk away with more than you've brought."
Traders in the wasteland tremble when they see you
[collapsed title=Spoiler]Trader prices are 15% cheaper[/collapsed]
Energy Weapons
"Arrive at peaceful resolutions by using superior firepower."
Armored enemies are easier using energy weapons
[collapsed title=Spoiler]When you attack using energy weapons your enemies DT is reduced by an extra 5[/collapsed]
Explosives
"The best way to solve a problem is to make it go away."
You can have more explosions in VATS™
[collapsed title=Spoiler]Explosives cost 15% less AP[/collapsed]
Guns
"Because it's easier to have courage from a safe distance away."
You can attack with Guns faster using your Vault-Tec Assisted Targeting System™
[collapsed title=Spoiler]Reduces AP cost for Guns by 10%[/collapsed]
Lockpick
"Always strive for the unobtainable." *Not implemented yet* Higher chance of finding good things in safes
Note: Since it's not implemented it is still giving the +10 Lockpick.
No Spoilers for this one.
Medicine
"The smart man knows a bandage only hides his wounds."
You're harder to get hooked
[collapsed title=Spoiler]Reduces the chance of you getting addicted by 25%[/collapsed]
Melee Weapons
"It's important to do business up close and personal."
You swing your weapons faster [collapsed title=Spoiler]You attack 20% faster while using Melee weapons[/collapsed]
Repair
"Why go down with the ship when you can try to fix it?"
Your weapons need repairing less often.
[collapsed title=Spoiler]Equipment durability increases by 25%[/collapsed]
Science
"Always be prepared to explain the hows and whys."
Robots are easier to destroy [collapsed title=Spoiler]You deal 20% more damage to robots[/collapsed]
Sneak
"The safest distance between two points is a shadowy line."
You're more dangerous from the shadows
[collapsed title=Spoiler]Your critical sneak attack deal 25% more Damage[/collapsed]
Speech
"Let words be your weapon."
People find it easier to like you
[collapsed title=Spoiler]Your reputation increases 20% more each time (Doesn't work with mod added factions)[/collapsed]
Survival
"The best way to win an argument is to be the loudest."
Explore more in less time
[collapsed title=Spoiler]Your moving speed increases by 10%[/collapsed]
Unarmed
"When words fail, there's always fists."
You punch faster in VATS™
while bare handed
[collapsed title=Spoiler]Your bare handed punches only use half AP in VATS[/collapsed]
Post edited due to changes made to some Bobblehead effects
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old lazy me
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I rarely use VATS and usually only with melee weapons which always have 95% to hit in VATS anyway so I hope someone else can help with this one.
(Like Mobius says: "You're no match for science!" or something like that