It is my opinion that the author of this book is not qualified to give financial advice.
After settling on her first house, she was left with $17 in her bank account and a mountain of credit card debt. This is one of the most insane financial stories I have ever heard. I have no idea at all how she wrangled the banks into loaning her a mortgage, especially considering that by her own admission she spent virtually all of her twenties pissing away her income on wine.
For the next few years, she survived by pumping most of her income into her repayments and making lots of essential purchases with her credit card. She carried ~$11k of credit card debt for years before amassing enough equity to consolidate that debt into her mortgage. This is deeply inadvisable.
To make matters worse, her 'absolute minimum' budget during her first year included a $150 per week fun budget. And she's single! This is double what she paid for food each week and triple what she paid for transport. This is absolutely insane. For context, my fun budget, at 3% of my net pay, is $34.5 per week, or less than one quarters of hers. And I'm partnered!
Instead of paying down her massive credit card debt so that she could then pay down her massive mortgage, she spent a massive $150 per week on fucking getting pissed. I don't know how else to say this, but what a loser idiot.
She is an absolutely terrible financial advisor. Despite consolidating her credit card and home loans, she kept one credit card open "just in case". No: pay it off, rip it up, and learn to live within your means instead of taking on more debt on top of your mountain of a mortgage. She also quit her job after consolidating her loans and buggered off to Ireland for a working holiday because she thought she was debt-free. Her words. What a train wreck.
Nevertheless--and this is the screw on which the whole book turns--the long-term financial payoff of getting into the Aussie property market might have been lucrative enough to outweigh all of her many abysmal financial decisions.
This is my main takeaway from this book: that Aussie property is an insane money-printer. (I knew that already, of course, as do all adult Aussies bombarded with news about the housing crisis. But anecdotes and stories have a way of making abstract knowledge feel more real). And that any Aussie who wants to get rich or at least financially comfortable ought to seriously consider doing as the author did and get on the gravy train at their earliest possible convenience. I would only caution against taking on the radical levels of debt that their author. Get on the gravy train ASAP, but be prudent, patient, wise. Make haste slowly. Build a bigger savings buffer, learn how to budget, eliminate all other debt, and get used to living well within your immiserated mortgagee means.