Firstly, welcome to THL
secondly, as you say you are a beginner am I in the understanding this is to be your first rifle??
if it is then the question would be what's you budget....
The easiest way to do it is decide on your budget then visit your local gun shop and see what they have, try them out both spring and pcp, get the feel for the rifle you think suits you best then decide what calibre you want it in.
Once you've done that and decided on your rifle & scopes get yourself down to a local club/range and practice some paper punching(target shooting) try and achieve a 5-10