Optimal nutrition - not what you think! Here's a fabulous, free mini-course.
'Real Food for Rookies' by Kelly the Kitchen Kop - a great course on eating real food on a budget. Clients of Birth Servant are granted free access.
Here's a great summary of the foods that make for an optimal pregnancy, birth and baby.
The Weston A. Price Foundation, a non-profit nutrition & educational foundation, has a website loaded with articles, research & resources on traditional foods & their preparation. Each local volunteer Chapter Leader (of which I am one) provides a resource list with local food & raw milk sources for their community & hosts meetings & classes on relevant topics.
Dr. Brewer had wonderful success with his clients for decades with this diet.