Inspired by the warrior forum, here is a list of useful Datacrons for agents, these will include: Aim, Cunning, presence, endurence & Red matrix shards (since 3 X Red is the only useful combo at 50), if you want the others, by all means ask me to add them,

Hutta:

+2 Aim:

+2 Presence:

Korriban:

+2 Endurence: http://www.youtube.com/watch?v=Yp2Y8GDucPE

Red matrix shard:

Dromund Kass:

+2 cunning:

+2 endurence:

+2 presence:

Balmorra:

+2 aim:

+2 cunning:

Nar Shaddaa:

+3 Aim:

+3 Cunning: http://www.youtube.com/watch?v=MkwkmsaVxxE

+3 Presence:

Tattooine:

+3 Aim: http://www.youtube.com/watch?v=z_VWrCAwDeE

+3 Cunning: http://www.youtube.com/watch?v=NVYz_4JWZ5c

Alderaan:

+4 Aim: http://www.youtube.com/watch?v=RrQxSzuUMtc

+3 Endurence: http://www.youtube.com/watch?v=OVF4K9IaLzs

+3 Presence: http://www.youtube.com/watch?v=q1srl3vUsXw

Taris:

+4 Aim: http://www.youtube.com/watch?v=sUo1xRlgMp0

+4 Cunning: http://www.youtube.com/watch?v=OivwlcWy9jQ

+3 Endurence: http://www.youtube.com/watch?v=92HCqKukVIg

+4 Presence: http://www.youtube.com/watch?v=dieqG-Dw4rE

Quesh:

+4 Cunning: http://www.youtube.com/watch?v=e6gqi7A_G3M

+4 Endurence: http://www.youtube.com/watch?v=5dsjjaaXODk

Hoth:

+4 Cunning: http://www.youtube.com/watch?v=b9CMJAi3aRQ

+4 Endurence: http://www.youtube.com/watch?v=0_ainKO81ic

+4 Presence: http://www.youtube.com/watch?v=N3OUXXFZkmU

Red Matrix Shard: http://www.youtube.com/watch?v=W5EA2c3M0V4

Belsavis:

+4 Aim: http://www.youtube.com/watch?v=Kf22hDfSK1U

+4 Endurence: http://www.youtube.com/watch?v=Z-pqLzahvpg

+4 presence: http://www.youtube.com/watch?v=Hc3Ke3b_pzc

Voss:

+4 Cunning: http://www.youtube.com/watch?v=cM3Zp10GDmc

+4 Endurence: http://www.youtube.com/watch?v=ieXOEsvD_rY

+4 Presence: http://www.youtube.com/watch?v=mo3OdHGIFjM

Corellia:

+4 Aim: http://www.youtube.com/watch?v=eWE8YDF3OaM

+4 Cunning: http://www.youtube.com/watch?v=zhb_kRcHJSs

+4 Presence: http://www.youtube.com/watch?v=N1hpGAE9ojE

Ilum:

+4 Aim: http://www.youtube.com/watch?v=bondHuPqysQ

+4 Endurence: http://www.youtube.com/watch?v=aUUtAIQ1ybk

Red Matrix Shard: http://www.youtube.com/watch?v=54-5EQ5Xk4M

Imperial Fleet:

+10 To all Stats: http://www.youtube.com/watch?v=D7miHDE_VOA

Matrix shards: Red, Red, Red = Matrix Cube M7-R3 : 72 Cunning, 48 Endurance, 7 Critical Rating

note 1: for +4 Endurence on Voss, you need to complete "The Trials" mission (thank you Jaberwoocky) or you can't get it. Other than that, follow the video.

Note 2: some need prebought items to get, I would think the videos show this, if not, let me know.

Note 3: If any video is in any way unclear, let me know and I'll try to find a better one, I didn't watch them all, the full length.

I just want to say that the cunning one on Taris really drove me crazy. It's not that complicated, just the jumps onto thin ledges....arrrrg

Also, there is a faster way to get to the Aim one in Alderaan. You can actually jump into the water and jump up the rocks on the little island.

what videos I actually found super helpful, when hunting down datacrons on my warrior, were the ones made by Degren from "friends & pals" guild. His youtube name is FAPDegren. But his videos show all the datacrons in 1 video on every planet (1 video pr. planet) so I didn't use them.

I could have been super lazy and linked his videos and just said "1st and 3rd datacron in this video" "2nd and 4th and 5th in this video" etc. but I didn't. If you are the sort of person that wants to get them all, I suggest using his videos, they are the best I've seen by far.

Going to have to hunt some of these this evening.

I started hunting these down last night as I'm leveling my armormech skill