Re: Building a Dwarf Cleric (of Moradin)
You pick a dwarf as your race, then you pick cleric as your class. Congrats, you have built a dwarf cleric!
... okay, snark aside, is there something in particular you're confused about? Being a dwarf allows you to get a +2 to either of your "prime" stats, depending on how you want to build the Dwarf (Strength focused, or Wisdom focused?)
A Strength-based cleric (generally) will mix it up in melee, and use their weapon as their main source of damage. A Wisdom-based cleric will tend to stay behind the front-lines, and use their holy symbol (as an implement) to attack enemies from afar.
The biggest advantage of being a dwarf is that your Second Wind is a minor action; this gives you some extra survivability. If you want to take advantage of it, you'll probably want to lean towards being a Strength-based cleric, who will "mix it up" in melee more often.