Welcome to the site and the lifestyle. If you haven't done so you should go to the beginners forum and read "are you a beginner".
There is also a thread on this site that had to do with peoples worst mistakes and one of the resounding statements is "working only the money muscles" IE: chest and biceps.
You should not be so concerned with a bigger chest just yet but choose a program that includes chest as part of a total body concept.
You may find that your chest comes along nicely without any specialization. After a couple years experience then you may decide to apply some extra focus to lagging body parts.
All you need to know can be found here but you have to listen to the great advice you can get.
To answer your question, choose some basic lifts that hit the chest from a variety of angles. Incline, decline and flat bench with barbell or dumbells is a good start but do it only as part of a program including squats, deads, lots of rowing, overhead pressing, etc.
Keep your body balanced or you'lle pay the price later.
That's probably more than you hoped for and perhaps you already know this stuff but I'de hate to see a young guy ruin himself right off the bat.