Only enough to know that it, like other writings, is subject to interpretation, especially after so any years since it's original writing.
There's one very important aspect which is not subject to interpretation, and that's the life and example of Mohammed himself.
He was a full-on terrorist. If you live by his historical example, you end up flying a jet into a building. It's very cut and dried, very black and white. All the philosopical gyrations aside, and 'religious wisdom and mysticism' contained in the Koran, his actual, historical life is a shining example of what we are seeing today.
"The Women" [4.89] They desire that you should disbelieve as they have disbelieved, so that you might be (all) alike; therefore take not from among them friends until they fly (their homes) in Allah's way; but if they turn back, then seize them and kill them wherever you find them, and take not from among them a friend or a helper.
[3.85] "And whoever desires a religion other than Islam, it shall not be accepted from him, and in the hereafter he shall be one of the losers."
[4.91] You will find others who desire that they should be safe from you and secure from their own people; as often as they are sent back to the mischief they get thrown into it headlong; therefore if they do not withdraw from you, and (do not) offer you peace and restrain their hands, then seize them and kill them wherever you find them; and against these We have given.you a clear authority.
The Dinner Table - [5.51] O you who believe! do not take the Jews and the Christians for friends; they are friends of each other; and whoever amongst you takes them for a friend, then surely he is one of them; surely Allah does not guide the unjust people.
The Cattle - [6.146] And to those who were Jews We made unlawful every animal having claws, and of oxen and sheep We made unlawful to them the fat of both, except such as was on their backs or the entrails or what was mixed with bones: this was a punishment We gave them on account of their rebellion, and We are surely Truthful.
The Immunity - Denial of Deity of Christ and His Messiahship - [9.30] And the Jews say: Uzair is the son of Allah; and the Christians say: The Messiah is the son of Allah; these are the words of their mouths; they imitate the saying of those who disbelieved before; may Allah destroy them; how they are turned away!
[9.5] So when the sacred months have passed away, then slay the idolaters wherever you find them, and take them captives and besiege them and lie in wait for them in every ambush, then if they repent and keep up prayer and pay the poor-rate, leave their way free to them; surely Allah is Forgiving, Merciful.
The Congregation [62.6] Say: O you who are Jews, if you think that you are the favorites of Allah to the exclusion of other people, then invoke death If you are truthful.
The Cow - [2.111] And they say: None shall enter the garden (or paradise) except he who is a Jew or a Christian. These are their vain desires. Say: Bring your proof if you are truthful.
Quran tells Muslims to kill the disbelievers wherever they find them (Q. 2:191), to murder them and treat them harshly (Q. 9:123), slay them (Q. 9: 5), fight with them, (Q. 8: 65 ) even if they are Christians and Jews, humiliate them and impose on them a penalty tax (Q. 9: 29). Quran takes away the freedom of belief from all humanity and tell clearly that no other religion except Islam is accepted (Q. 3: 85). It relegates those who disbelieve in Quran to hell (Q. 5: 11), calls them najis (filthy, untouchable, impure) (Q. 9: 28). It orders its followers to fight the unbelievers until no other religion except Islam is left (Q. 2: 193).
"Fight those who do not profess the true faith [ISLAM], till they pay the jiziya with the hand of humility." - Koran 9: 29
".... I will instill terror into the hearts of the unbelievers, Smite ye above their necks, and smite all their finger tips of them." - Koran 8: 12
"Prophet, make war on the unbelievers and the hypocrites, and deal rigorously with them. Hell shall be their home: an evil fate." - Koran 9: 73
"When you meet the unbelievers in the Jihad strike off their heads and, when you have laid them low, bind your captives firmly." - Koran 47: 4
"The only reward of those who make war upon Allah and His messenger and strive after corruption in the land will be that they will be killed or crucified, or have their hands and feet and alternate sides cut off, or will be expelled out of the land. Such will be their degradation in the world, and in the Hereafter theirs will be an awful doom...." - Koran 5: 33-34
" Fight those who believe not in Allah nor the Last day, nor hold the forbidden which hath been forbidden by Allah and his messenger, nor acknowledge the Religion of Truth from among the People of the Book, until they pay the Jiziyah with willing submission. And feel themselves subdued." - Koran 9: 29
"....the Christians call 'Christ the Son Of God'. That is a saying from their mouth; (In this) they but intimate what the unbelievers of old used to say. Allah's curse be on them: how they are deluded away from the Truth." - Koran 9: 30
"....the People of the Book and the pagans shall burn for ever in the fire of Hell. They are the vilest of all creatures." - Koran 98: 1-8
"Garments of fire have been prepared for the unbelievers. Scalding water shall be poured upon their heads, melting their skins and that which is in their bellies. They shall be lashed rods of iron. Whenever, in their anguish, they try to escape from Hell, back they shall be dragged, and will be told: 'Taste the torment of the Conflagration!'" - Koran 22: 19-22, 23