I took my PPL ride two weeks ago. The biggest thing is: don't stress it! Your CFI would not sign that endorsement if he/she didn't think you were ready. After spending dozens of hours flying with you, your CFI knows that you are ready to pass.
Now, on to what you're looking for. I would try to be familiar with the ACS, POH, FAR, and AIM. For me, this included tabbing the parts of the FAR/AIM that I wasn't super knowledgeable in. I didn't even look at the PHAK or AFH during my oral, but it there for you to use. This book helped me out considerably. It's like the Sparknotes of the ACS, FAR, and AIM as they pertain to the PPL checkride.
During your checkride, remember that it's an open book exam. You can use any information available to you. However, there is a limit. It was explained to me that using it for 10% of questions is okay, 90% of the questions is not okay. The acceptable amount is somewhere in between. The more familiar you are with your information, the more acceptable it is to use it. For example, I could never remember the SVFR minimums, so instead, I just memorized that it's FAR 91.157. On the day of the checkride, my examiner was pretty impressed that I knew where it was, even though I had no clue what they were.
It's not really a hard test. You'll ace it for sure!
Found this to be a pretty good resource as well for $9. The book is small, but packed with quick references.
I found the blue book tedious. I used the audio book referenced earlier and this book, recommended by my CFI: Private Pilot Checkride... https://www.amazon.com/dp/152028795X?ref=ppx_pop_mob_ap_share