Just starting out with photography

I have a Nikon D3200 with 18-55mm, 55-300 and 55-200mm lenses. The goal is to do enough photography work to save up for a newer and better camera. I'd love to do family, maternity and birthday photography and work up to being able to offer weddings. How do you offer services and practice shooting without a studio or the ability to shoot outside due to weather? I will have some plain backdrops in a month or so but would like to start somewhere in the meantime. Should I suggest inside their home? It be a free session so I can get practice with working with my camera, people and editing skills.