Surah 4 begins by repeating one of the first lies of Genesis. God created a man first, then a woman from the man, and all humans descended from them.
Your Lord Who created you from a single soul and from it created its mate and from them twain hath spread abroad a multitude of men and women. 4:1
Then Allah says something nice: don't steal from orphans or exchange the good for the bad.
Give unto orphans their wealth. Exchange not the good for the bad (in your management thereof) nor absorb their wealth into your own wealth. Lo! that would be a great sin. 4:2
If you mistreat orphans, Allah will burn you forever in the Fire. Fair is fair.
Those who devour the wealth of orphans wrongfully, they do but swallow fire into their bellies, and they will be exposed to burning flame. 4:10
Of course there are lots of other things that Allah will burn you forever for. Like disobeying him or his messenger Mo.
Whoso disobeyeth Allah and His messenger and transgresseth His limits, He will make him enter Fire, where he will dwell for ever; his will be a shameful doom. 4:14
Or killing people through injustice or aggression.
Kill not one another ... Whoso doeth that through aggression and injustice, we shall cast him into Fire, and that is ever easy for Allah. 4:29-30
Or behaving badly without repenting until nearly dead, or dying while disbelieving.
The forgiveness is not for those who do ill-deeds until, when death attendeth upon one of them, he saith: Lo! I repent now; nor yet for those who die while they are disbelievers. For such We have prepared a painful doom. 4:18
Next Allah lays down the law on inheritance.
The first part is clear enough. Females get half as much as males.
Allah chargeth you concerning (the provision for) your children: to the male the equivalent of the portion of two females... 4:11a
But things get confusing after that.
...and if there be women more than two, then theirs is two-thirds of the inheritance, and if there be one (only) then the half.And to each of his parents a sixth of the inheritance, if he have a son; and if he have no son and his parents are his heirs, then to his mother appertaineth the third; and if he have brethren, then to his mother appertaineth the sixth, after any legacy he may have bequeathed, or debt (hath been paid). Your parents and your children: Ye know not which of them is nearer unto you in usefulness. It is an injunction from Allah. Lo! Allah is Knower, Wise.
And unto you belongeth a half of that which your wives leave, if they have no child; but if they have a child then unto you the fourth of that which they leave, afte r any legacy they may have bequeathed, or debt (they ma y have contracted, hath been paid). And unto them belon geth the fourth of that which ye leave if ye have no ch ild, but if ye have a child then the eighth of that whi ch ye leave, after any legacy ye may have bequeathed, o r debt (ye may have contracted, hath been paid). And if a man or a woman have a distant heir (having left neit her parent nor child), and he (or she) have a brother o r a sister (only on the mother's side) then to each of them twain (the brother and the sister) the sixth, and if they be more than two, then they shall be sharers in the third, after any legacy that may have been bequeat hed or debt (contracted) not injuring (the heirs by wil ling away more than a third of the heritage) hath been 4:11b-12
None of that makes sense to me, but here's a link that explains it all for you.
But the focus of this Surah is, as its title suggests, on women.
Allah explains that it's OK to have two, three, or four wives, slave or free. Whatever.
Marry of the women, who seem good to you, two or three or four; and if ye fear that ye cannot do justice (to so many) then one (only) or (the captives) that your right hands possess. 4:3
And if you can't afford to marry free Muslims women, go ahead and marry slaves, as long as they're Muslims.
Whoso is not able to afford to marry free, believing women, let them marry from the believing maids whom your right hands possess. 4:25a
But don't worry too much about it. If you decide you don't like some of your wives you can always exchange them for others.
And if ye wish to exchange one wife for another.... 4:20
Be careful, though, not to marry any women that are already married -- unless they're slaves that you obtained in war. Then it's OK.
All married women (are forbidden unto you) save those (captives) whom your right hands possess. 4:24
If any of your non-slave wives get lewd, cut off their inheritance and confine them to the house until they die.
It is not lawful for you forcibly to ... take away a part of that which ye have given them, unless they be guilty of flagrant lewdness. 4:19
As for those of your women who are guilty of lewdness ... confine them to the houses until death take them. 4:15
If your slave wives are guilty of lewdness, punish them half as much as you punish your lewd free wives.
If when they are honourably married they commit lewdness they shall incur the half of the punishment (prescribed) for free women. 4:25b
Always remember that men are better than women because Allah made them that way and men spend lots of money on women.
Men are in charge of women, because Allah hath made the one of them to excel the other, and because they spend of their property (for the support of women). 4:34a
So good women are obedient to men, guarding the secret that Allah gave to them.
So good women are the obedient, guarding in secret that which Allah hath guarded. 4:34b
If your wives refuse to obey you, beat them and refuse to have sex with them.
As for those from whom ye fear rebellion, admonish them and banish them to beds apart, and scourge them. 4:34c
That'll teach them.