What did Archer learn first, The Sword or Archery? The Archer from the Fate:SN series is both a great archer and a great sword/knife user. Since he's Archer, you would think that he was an archer first. 
However, I have been told that apparently, 


  Archer is the future Shiro. 


Since this character learnt swords first why was he the archer and not an Assasin, a Sabre or something else. What did the Archer learn first, the Sword or the bow?
since Shiro started to use swords first


That is incorrect.

This is not clear neither from the anime nor from the VN, but Shiro is highly skilled in archery way before the story starts. This is why he is hanging around archery range early in the story.

Somewhere I read that Shiro was so good, he had to put effort into actually missing the target. He stopped practicing archery because he was bored of succeeding while putting no effort into it.

It was only after Holy Grail War started that he began to actually use swords and copying Archer's style.