Is income from an internet café halaal or haraam?

Used to Take Things From Work; What Now After Repentance?

Should he take what he entitled to without the one who wronged him knowing?

Should he accept his father’s money that was earned from haram sources?

He used to take money without his parents’ knowledge; what should he do now?

Accepting gifts and donations from haraam wealth

He told the students to pay money towards classroom renovations and he gives them grades accordingly

He pilfered some money and does not know how much, and he cannot repay it. What should he do?

Invitation to a dinner given by a riba-based bank

He took some money unlawfully. How should he repent?