If you touched the script of the holy Quran without wudhu', and accidentaly, then there is no problem or sin for that, and you do not need to do anything.
And Allah knows best.
If the informational article makes some one pay attention to the unlawful acts in casinos, then it is unlawful to write such article and money earned from it will be also unlawful.
We are not allowed to write or mention the bad deeds of others. Writing our own bad deeds is also not good because of the harm of publicizing bad deeds which can encourage others to do it. Our bad deeds must remain between us and our Creator seeking forgiveness and protection not to commit it again.
A portion of your wealth can be allocated to those whom you chose however, there are also inheritance laws pertaining to one’s relatives. One can refer to the various inheritance laws for further details.
May Allah grant you success
Writing of fictions or novels is permitted provided they do not go beyond the bounds of shari'a. So, for example, writing a novel which could clearly lead to lustful thoughts or acts is haram, so is writing any form of material which is insulting to Islam or God, the Prophets, and Imams.