There is a ton of information in various threads here, but it can be difficult to find. Try the search function for some of these terms.

Emerald Coast, Cage, and Checked and Set are all solid prep/review companies folks have used. Don't skimp on cost for prepping for what will be a multi-million dollar career. Just fork up the funds, and be as prepared as you possibly can.

As for logbook review, depends on Military or Civ. For prior military, the seem to take your flight records at face value. Do your best on the application to honestly replicate the XC hours, Instrument time/approaches. Have a reasonable method you can explain, and you'll be fine. If coming from the pure Civ side, some have gone so far as to put their info into a third party software, and print/bind a single logbook, while still having the originals with them to validate signatures/sign offs. I've often felt this was overkill, but it's your career, so...

Best of luck, and don't be afraid to ask for help. You may see the occasional jerk comment, but there are plenty of folks who honestly are willing to assist however they can.