God has also given pastors, teachers, evangelists to equip the saints, and some of them write books as well.
I'd be happy and encouraged to see a newly married couple reading some good books on marriage, including the Word.
I'd be happy and encouraged to see a newly married couple spending time with seasoned couples from their church. There are folks in every congregation who have forged deep, loving relationships in the crucible of adversity. You just can't get that out of a book.
Titus 2:3-5 NAS77
3 Older women likewise are to be reverent in their behavior, not malicious gossips, nor enslaved to much wine, teaching what is good,
4 that they may encourage the young women to love their husbands, to love their children,
5 to be sensible, pure, workers at home, kind, being subject to their own husbands, that the word of God may not be dishonored.
There are hundreds of thousands of books on a multitude of subjects. It is easy to get consumed by the instructions. At some point you've got to put down the book and do it.
My maternal grandfather died when I was four months old. I never knew him in an earthly sense but know him as well as if we had. Grandma told countless stories of Grandpa scraping out a living in the coal mines of Pennsylvania. They raised my mother, aunts and uncles with everything they needed except money. She spoke of the joy of watching Grandpa get saved in a Primitive Methodist church in Jermyn, PA and of her children doing the same in turn.
When times were tough they did not have the luxury of reading multiple books on the subject. They knew the promises they made before God - to love, honor and cherish - and the responsibility to train up their children in the way they should go. And then went and did it. They prayed together and trusted God to supply their needs.
Grandma and Grandpa were ignorant of the nuances of the human psyche. I'm sure they would be shocked at the sheer volumes of works on marriage and in particular Christian marriage. For the same $24.95 you'd pay for the latest and greatest book on the subject of marriage you could buy the fixings for a nice meal and invite an older couple to your home.