Would your newsletter be useful to men as well as women?
Your question is very general in nature, but I would suggest the following sites for men.
www.survivalistboards.com (a very active forum)
www.todayssurvival.com (a good podcast)
There are just too many tips to list in an email, and I’m not sure exactly what type of information you’re looking for, but these sites are full of excellent information.
My newsletter is aimed at everyone, not just women.