<human>: Long story short, I had a baby really young with a really not nice guy. I've done fine - worked in hospitality for a few years to make ends meet, rented units, and I'm now in my first year uni (Australia) and have an awesome child. Met a really nice person and have been with him happily for three years now, and his parents have offered - repeatedly - for us to live with them rent and utility free. Their house is massive, we get along fantastically, they're great people who just want to help us get ahead. We've accepted and are moving in April when our lease ends.
I'll be honest. I'm not good at saving money or budgeting. Our income is about 45 thousand dollars p.a. We both work casually in hospitality while we're at uni. We always have enough (car insurance, car loan, rent, health insurance etc) but we really don't manage to save anything extra. 
How do we make the most of this opportunity and really use it to get ahead? For instance, is it a good idea to invest some in shares, or save all our money for our own house etc?

Can you summarize the given text in a few sentences?
<bot>: Young family moving into parents house to save money. Heaps of left over money, no idea what to do with it or how to manage it properly in a way that will benefit us in the long run.