Yeah, not too bad. The first tip is by far the most powerful in my personal experience. For many years we have automated savings and then lived on whatever is left over.
I think looking first at buying used is another good way to save money. I love our FB Buy Nothing Group, FB Marketplace, Craigslist, eBay, etc. Sometimes you just get damn lucky, like when I found a 2-kid bike trailer for free. Score!