From what I have read, Preterists believe the Olivet Discourse and all Old Testament Prophecies were fulfilled between the birth of the New Testament Church and the fall of Jerusalem in 70 A.D.
Correct. The fall of Jerusalem was the end of the Old Covenant.
But I see people on this board and others say that Preterists don't believe in a literal future second coming of Christ?
They believe in a fulfilled literal second coming of Christ, not physical though. His second coming was just like "comings" the 1st. Century Jews were familiar with in the Old Testament.
1 The burden of Egypt. Behold, Jehovah rideth upon a swift cloud, and cometh unto Egypt: and the idols of Egypt shall tremble at his presence; and the heart of Egypt shall melt in the midst of it.
Ps. 18: 8 There went up a smoke out of his nostrils, And fire out of his mouth devoured: Coals were kindled by it.
9 He bowed the heavens also, and came down; And thick darkness was under his feet.
8 and I am come down to deliver them out of the hand of the Egyptians, and to bring them up out of that land unto a good land and a large, unto a land flowing with milk and honey; unto the place of the Canaanite, and the Hittite, and the Amorite, and the Perizzite, and the Hivite, and the Jebusite.
Micah 1: 3 For, behold, Jehovah cometh forth out of his place, and will come down, and tread upon the high places of the earth.
Many more examples like this speaking of "comings" in Judgement.
Preterist also stress "Apocolyptic" language not being taken literally. Here is an example:
9 Behold, the day of Jehovah cometh, cruel, with wrath and fierce anger; to make the land a desolation, and to destroy the sinners thereof out of it.
10 For the stars of heaven and the constellations thereof shall not give their light; the sun shall be darkened in its going forth, and the moon shall not cause its light to shine.
11 And I will punish the world for their evil, and the wicked for their iniquity: and I will cause the arrogancy of the proud to cease, and will lay low the haughtiness of the terrible.
Describes God using the Medes to destroy Babylon. A historical past event. Yet when language like this is used in the New Testament,especially Revelation, futurist claim it must be literal.
Preterist are said to spiritualize everything, yet look what Jesus said about His Kingdom:
20 And being asked by the Pharisees, when the kingdom of God cometh, he answered them and said, The kingdom of God cometh not with observation:
21 neither shall they say, Lo, here! or, There! for lo, the kingdom of God is within you.
It is not a physical kingdom, but a spiritual one. So why do we insist on attributing physical elements on a spiritual Kingdom?
When does the Kingdom come? Jesus answers this question:
27 For the Son of man shall come in the glory of his Father with his angels; and then shall he render unto every man according to his deeds.
28 Verily I say unto you, there are some of them that stand here, who shall in no wise taste of death, till they see the Son of man coming in his kingdom.
So if the Kingdom came in the life of those disciples, then everything associated with the Kingdom( judgement,second coming, resurrection) also happened then. These are all spiritual.
Here are 2 sites to Full-Preterist:
I recommend the series on "The Sermon on the Mount".
Lots of articles dealing with numerous subjects on Eschatology.