How should we call people to Islam?

Who do Muslims worship?

I hope you can give me some examples of good deeds that we can do every day to increase our hasanaat.

Perhaps my question has been asked many times before. It is about mortgages in non-Muslim countries. We live in a western society and we live in rented accommodation so as to avoid riba. Recently we found out that there are no houses for rent, and 96% of the market is based on mortgages. All houses are offered for sale only. Some of them told me that in this situation it is permissible for me to  buy a house by means of a mortgage and, moreover, it is possible to get the mortgage in the name of family insurance, so that the individual does not pay riba or a mortgage; rather it is paid by the insurance. Is it permissible to get a mortgage in the name of the family insurance, in such a way that you and other trustees or borrowers are not dealing directly with the bank and the lawyer takes care of dealing with the mortgage on your behalf?
I hope that you can advise me as to whether that is permissible or not.

I would like to know some of the ahaadith which speak of the virtues of Jumu'ah prayer.

I have very difficult question and I think this is my only hope that you can help me to find the answer.
I am a Russian Jewish girl and I know this Muslim guy for over a year. The longer we know each other, the more problems and difficulties we face. Not in the religious or cultural ways. We love each other and there is an issue of whether he can marry me or not.
He is a very good Muslim and he comes from traditional family. I am very fond of his beliefs and beliefs of his family. I was born in a very agnostic country and couldn't be properly introduced into any religion. It was forbidden. When I came to the US I started my research on different religions and found out that my beliefs do not really match all Jewish sayings. I did a lot of research on Islam and by looking at him and a couple other Muslim boys and girls, and by reading Quaran, I have a very strong feeling that I could become a good Muslim. I want to go to school to learn the culture and religion more precisely, to learn the language. I contacted the mosque and was ready to go... but I faced the issue: would I be accepted as a Muslim sister like other people who came from different religions except Jewish? Jews and Muslims are in big contradictions and I know that friendship is almost impossible. I am praying to God (in my home language - Russian), to lead me the right way to achieve my beliefs.
Please, help me to find my answers

Some times when i wake up in the morning, i find some wet coming out. Please don't take it as a wet dream, or urine, becuase the sticky stuff comes out usually just after i have woken up in the morning. Most of the days i have to wash my under wear just becasue of that, and sometimes i wash my pants too.

I read it somewhere that if its not semen, just that sticky stuff than we don't need to perform ghusl, and only wuzu is enough to offer prayers. If it is then what about the clothes?. The same stuff comes out during some salacious situations also, though i try to stay away from all that kind of stuff.

Is it sufficient to use tissue only when cleaning oneself after defecating, or is it essential to use water?.

I live in a city where there are no other Muslims and no Mosques. I need to peform my friday Jumuah, unfortunately I am not knowledgeable enough to peform the prayer myself, may I use a audio recording to lead me? Also may I use earphones since I don't want to disturb those in the next room and it blocks out distracting noises. I'm studying so that I may peform my own prayers confidently, in the meantime may I use these measures?.