Is it true that islam prohibits eating "food on top of food"? I mean having two types of different foods in one meal? For example soups and steak?
I don't believe there is any Ayah or Hadith that says it is not permissible to eat food over food.
Is it true that if you get wealthy you have to feed the poor in your city one a week on the weekends?
I have never come across an Ayah or Hadith that states it has to be on weekends but there are Ayahs and Hadiths that state it is a Must to give to the poor, this is ether zakat or sadaqah.
Righteousness is not that you turn your faces toward the east or the
west, but [true] righteousness is [in] one who believes in Allah , the
Last Day, the angels, the Book, and the prophets and gives wealth, in
spite of love for it, to relatives, orphans, the needy, the traveler,
those who ask [for help], and for freeing slaves; [and who]
establishes prayer and gives zakah; [those who] fulfill their promise
when they promise; and [those who] are patient in poverty and hardship
and during battle. Those are the ones who have been true, and it is
those who are the righteous.
Surat Al Baqarah Ayah 177
It was narrated from Salman bin 'Amir that the Prophet said: "Giving
charity to a poor person is charity, and (fiving) to a relative is two
things, charity and upholding the ties of kinship." (Sahih)
أَخْبَرَنَا مُحَمَّدُ بْنُ عَبْدِ الأَعْلَى، قَالَ حَدَّثَنَا خَالِدٌ،
قَالَ حَدَّثَنَا ابْنُ عَوْنٍ، عَنْ حَفْصَةَ، عَنْ أُمِّ الرَّائِحِ،
عَنْ سَلْمَانَ بْنِ عَامِرٍ، عَنِ النَّبِيِّ صلى الله عليه وسلم قَالَ
" إِنَّ الصَّدَقَةَ عَلَى الْمِسْكِينِ صَدَقَةٌ وَعَلَى ذِي
الرَّحِمِ اثْنَتَانِ صَدَقَةٌ وَصِلَةٌ " .
so you can give charity at any time, not just on weekends. And actually zakat is different from sadaqah, zakat is obligatory Sadaqah is voluntary, and actually sadaqah is translated as voluntary charity. Zakat has seperate rules telling how much should be given, when and to whom it should be given and so on.
And of course, is Quran in general tolerant? I mean is it really strict in it's rules(I have not read it myself, yet, but I will one day).
You are asking for a perspective, and that really differs from person to person. If you ask a strong Muslim, they would most likely say it is just, but the answer will differ in the level the Muslim is in.
I do not understand your last question.