I am trying to get the skills talnets and all the thing needed to aspire to that

You need good Fellowship, Willpower and lots of saved XP. Also Rank 4+ only.

Alex

See Rites of Battle p. 108 for prerequisites: Wp 45+, Fel 40+, Rank 4 or above, 3000 XP. Your wargear will be replaced, so if you want to lug your favourite heavy weapon around as a Devastator, prepare to buy Signature Wargear / spend the requisition - or talk to your GM.

i have looked but before i hit rank 4 what skills and talents that would be good to acquire before becoming a chaplain

You also need a cape and chapter serfs who will follow you into battle to make certain it stays on and properly draped.

Totally serious.

Best Astartes NPC ever was a Black Templar Castellan Dreadnought Chaplain, his chaplain whacker was affixed above his coffin, he rocked the power claw, assault cannon, and a whoooooole lot of holy hatred (Litany of Hate on a loudhailer...it was basically the best). He gave our feeble, mortal squad of guardsman a "coffin nod" for a job well done purging heretics.

Now you know what you have to live up to. A CAPE.

i have looked but before i hit rank 4 what skills and talents that would be good to acquire before becoming a chaplain

First, roleplay an opportunity to meet up with your local Chaplain for guidance. Let the GM set you up. You'll have to be an apprentice for some time, so better start early. Second, see Brother Vigilant for a pre-written NPC Chaplain in the Jericho Reach supplement, p. 78.

My Black Templar plans to be a Chaplain too, so what I'll suggest for him is the following list:

- Willpower. Insane amounts of it. Goes without saying.

- Forging the Bond (Rites of Battle, p. 226). Let him learn to cooperate with others' styles and beliefs.

- Litany of Hate. Needs no explanation, but - depending on your Chapter - might not be available for you. Talk with the GM.

- Common Lore (Adeptus Astartes) and Forbidden Lore (Adeptus Astartes) as high as possible, seeing that he'll have to guide Battle-Brothers from other Chapters:

"A Deathwatch Chaplain must become not only a righteous warrior but also a scholar of the Primarchs and of Chapter histories originating in the very birth of the Imperium. Thus, when a Deathwatch Battle-Brother stands at the brink of despair or impotent rage, the Chaplain will know the right liturgies and catechisms to speak, and which Chapter heroes or legendary battles of the past to cite that will inspire the warriors of the present." Rites of Battle, pp. 106-107

What I also plan is to make some of the Chaplain advances available earlier, specifically the Lore-related advances and maybe Intimidate, to make the apprenticeship feel like a process, rather than a magical level-up.

The idea of a Chapter Serf is neat, and might be a good idea flavour-wise, but I guess it can wait after donning the helmet and cape for the first time.

Otherwise, talk to the GM, and see what he has in mind. You can probably draw up a neat character development path with him.

_{That's an excellent set of advice for someone who wants to play a chaplain. I'd also write a few speeches and keep them handy in your mind for roleplaying opportunities.}