How To Utilize A Phono Preamp Board As Stand Alone

Interested in what it would entail to utilize a phono preamp board out of a Luxman receiver or any maker for that matter
If if there is a post already covering this, please let me know
Give me a simple outline, as I am not to electrically savvy. Someone else would actually do the work, I'm just curious how you would go about connecting a wall wart or ?

Thank you