Here are two sites that might be useful for you. Eating seasonally means fresher and usually cheaper produce.Seasonal eating resourceAnother seasonal eating resource
Also if you need recipe ideas, check out the recipes on this site. I also like Allrecipes
(This one gives you the ability to screen results by ingredient, nutritional information, and other dietary restrictions, among other criteria.)
I agree with Hoser that weekly is good to start with. Good luck.
"20 Now to Him who is able to do far more abundantly beyond all that we ask or think, according to the power that works within us, 21 to Him be the glory in the church and in Christ Jesus to all generations [n]forever and ever. Amen."