Various network setups for media serving and backups

Are there any good sites, blog posts, etc that show different home network configurations with a Time Capsule, external HDs and Macs for handling backups and media serving? Right now I have a simple Setup where my TC backs up my MBP. I also have a couple externals HDs w a lot of music and video that's not in my iTunes library on the MBP, the HD of which is at capacity. I know I want to be able to easily access all of that content on my MBP, AppleTV, iPhone, iPad. I also want to have a good backup solution (possibly even a backup of the backup for redundancy). I just don't know the simplest way to do it and haven't found a good resource to see the alternatives and/or pros/cons of different configurations. Any suggestions would be greatly appreciated!