hello, my Age is 36/Female weight is 55kg and height is 163cm Q1- I look small how can i build big m

Thanks for giving me more space to write.

I lost weight in my life  i were 64 before 5 years and now am 55kg. and really i look small which is good for woman 36y old Thanks to My Lord.

Q1- How can i look bigger and gain muscles and weight?

What is the possibility to have a particular gaining weight Diet ? 

My exercise i will do it home so what i need to have ( Facielity)?

Q2- Then the Hungging breast problem how to make them strong and big?

Q3- I want to learn fighting to be a strong person so how i can do it? in my country i did not find any Trainer so can some one help me?

Thanks a lot

Amalia