For Civil Services Examination 2014, you should commence your preparation right now. You should draw a comprehensive plan for preparation covering all aspects and should start with General Studies (Paper I, II, III & IV).
Try to cover most of the syllabus in next 4-5 months then take up optional subjects from October onwards and aim to finish it by January 2014.
If you wish to join coaching institute, plan it around October month. For General Studies any good coaching institute like Vaji Ram & Ravi, Sriram’s IAS or may be ALS can be considered.
For optional subject coaching, first zero-in on a particular subject then only think further.
Role of coaching institute in General Studies preparation
IAS 2013: How only one optional subject in Main Examination can affect your preparation?