In many ways, playing a Paladin is a balancing act. You can heal, tank or DPS, but you cant so any of them especially well unless you specialize in one of them through gear and talents. By doing so, you give up much of your flexibility by becoming weaker in the other two areas. Part of playing a Paladin is finding the balance point that suits your play style. Some useful tactics which are helpful in the daily life of a Paladin are here. Nothing can beat out experience, but some helpful advice can really improve your play style and help you make a lot of aion gold!
Playing a Paladin involves a lot of choices. As soon as you get past level 10 you will have to start making those choices as you collect talent points. From that point on you should start focusing on your style and collecting gear that will enhance it. Between talents and gear you can be formidable at whatever you choose to do. Be prepared though for those times when you want to play in a group and they need something other than your primary role.