I took advantage of a free trial in the past, and what I got was really a re-hash of stuff you can readily find on other FIRE websites.
How to maximize Social Security ( with and without spouse )
Asset allocation and re-balancing
Safe Withdrawal Rates and how to evaluate them
Retirement calculators of every type imaginable. most of them end up telling advising that you'll outlive your savings unless you save more.
IRA, ROTH, 401K, 403B, TSP - all kinds of info how to manage/contribute/convert them
529 plans for children and grandchildren
Wills & Trusts, Estate Planning, Charitable trusts
How to get senior discounts at many places ( restaurants, car rentals, hotels, etc. )
You can probably get most of the above from this forum alone, and places like MorningStar Retirement Forums, and the Vanguard BogleHeads, will cover the rest