Qadha Salaah

Q:

1. What are the conditions of a baaligha? I started having vaginal discharge at the age of 8, but only began praying and fasting at the age of 11, which is when I first got my period. Must I make up 3 years of prayers and fasts? If I had masturbated before having my first period, and do not recall excreting discharge with any coloration, was I baligh?

2. Can I make up prayers with intention of "this prayer or that"? I have some fajr prayers to make up for (I have no idea how many as I used to sometimes pray them at the time when one should not to sajdah).

3. I also have to make up 2 rakat nafl and sunnat prayers that become wajib when one breaks them, which I did often. So, when I am let's say doing maghrib prayer, for the last 2 rakats, can I make the intention of "either maghrib nafl, fajr fardh, or any wajib"?

Q: Are you allowed to read qadha salaah replacing 4 and 2 sunnah of zuhr

Q: Is qadha prayers accepted by Allah?

If I go out shopping or to a wedding, can I pray qadha when I get home and is it accepted?

Q:

1. As a youth, someone made an oath to not do something and they did it, they then fasted 3 days to expiate the oath (as they were unable to do anything else). Later that person apostatised from Islam but came back to the Deen. Do they have to redo the expiation for the oath broken? No oath was made since that time. 

2. Also, in terms of salah missed, are salahs missed over years must be made up by someone who Apostatised but later came back to the Deen?

Q: After I became baligh, I would offer my prayers but mostly I would miss them. I've missed my prayers and I don't know how many prayers I've missed. It's uncountable. How can I offer my missed namaz? How will I know that my missed prayers are done? Is it possible if I offer salat-ul-toba and never miss my prayers? 

Q: I have done some stupid things like missing my Salah. I have missed Salah for few years since I became an adult but I also missed my Salah a lot when I had a job and I now I don't know the exact number of Salah I have missed. Do I need to make up all Salah I missed? I have a habit of recording the qaza Salah down and praying it at a later date. Alhamdulilah now I read all my Salah but what should I do about all the missed Salah?

Q: A person used to be a thief and had stolen over $100 000. He does not have any of the wealth left and has about 7 years of qadha salaah. He has reformed his ways and wants to gain nearness to Allah Ta'ala. How does he compensate for the $100 000 he stole? How does he perform the 7 years qadha salaah in a timely manner?

Q: How will qadha be read for: Fajr, Zuhr, Asr, Maghrib and Esha?

Q: I have qadhaa salaah for 3-4 days to make up. Is it ok if I perform my fardh first and then my qadhaa?

For example, Fajr Salaah for that day then Fajr Salaah for the day I missed? 

Q: I have three days worth of qadhaa salaah left from 2017. Is it okay if I delay making them up? Maybe if I read one salaah each day or, make up some salaahs one day then miss the next day, thereafter make up some other day, etc.?