Career Change- sole parent with SNs child

I'm currently looking into a career change as there is no work in the industry I am trained in (building industry) and the hours involved are not compatible with being a sole parent and having child with SNs. I am looking at heading back to TAFE mid year and looking for a more flexible career, preferably working from home so I can be there for my son when he comes home from school. I have been unable to find appropriate before and after school care for him as he needs one on one care. The courses I am looking at doing include Book keeping and accounting. Can anyone in these areas give me an idea of hours, whether you have opportunities to work from home, what actual certificate/ diploma you have etc please.