Dear scholars, my question relates to changing name, I mean, is it necessary for newly converts to Islam to change their names or they can keep their Christian or any previous names?

Is it permissible for men and women to perform prayer while wearing tight clothes?
 

I would like to know how the Prophet (blessings and peace of Allah be upon him) earned his living?

I must say that I'm a revert, Alhamdullila, that I was raised as a catholic and that I was very ungrateful to my Rabb before Islam. Since I was a little kid I was mischievous and often committed sin. After one particularly grave sin, and I asked Allah Subhana wa ta'ala (even thought I was a kaaffir I prayed to Allah azza wa jalla and not Jesus, peace be upon him) to have mercy on me, and I promised Him not to marry if He forgave me. Now that I'm Muslim, Alhamdulillah, I protect my chastity. I know the importance of marriage and the protection it offers a sister, and I wish I could get married in the future to a righteous brother (insha'Allah) so I could learn from him and also to be a comfort for him. But I don't know if I'm excused of not fulfilling my promise to Allah in this matter or if a woman who used to be so wicked could aspire to marry a righteous man.

I think my brother is gay, and I say this because of the way he talks, the way he does his hair, the kind of clothes that he wears and the things that he is interested in. One time I used his USB and saw some pornography on it, including anal intercourse, and I do not know whether it was between two men, because I closed it quickly and erased the file. I asked him about it and he said he did not know where it came from, but in the end I found more in his room. I also checked his personal computer and I found out that he visits gay websites in the country where he is studying. My question is: do I have to advise him and warn him about the bad consequences of this sin?

I want to join an islamic society in europe. This society includes a mosque and dars.
The shura demands a membership fee. Is this halal?

There was a discussion about the issue of putting one’s trust in Allah (tawakkul) and taking measures; the trust of some of the righteous is like that of Maryam, to whom summer fruits used to come in the winter and vice versa without her taking any measures; rather she focused completely on worship. Please advise us about that, may Allah bless you.