Yes, why not; you have ample time for Civil Services Examination 2014 preparation and this year's schedule gives you little more time to prepare for it.
As you have asked about Preliminary Examination, you can do it within the time available with self-help or even with guidance from Coaching Institutes.
You can consider any reputed coaching institute for Prelims; some of the popular names are:
But, we suggest that you should look at the complete exam-plan and should understand related requirements at each stage of the examination seriously. This would reveal that you need to prepare for Main Examination simultaneously with Preliminary Examination preparation.
The following article would get you some insights about the right approach for preparation.