Vm image download resource

http://vmdepot.msopentech.com/List/Index

http://www.hanselman.com/blog/Over400VirtualMachineImagesOfOpenSourceSoftwareStacksInTheVMDepotAzureGallery.aspx

http://www.heitorlessa.com/virtual-machine-images-for-virtualbox-and-vmware/

https://bitnami.com/

http://virtualboxes.org/images/

http://virtualboximages.com/

SharePoint 2013 Development Environments

http://www.matthewjbailey.com/sharepoint-2013-dev-environment/

SharePoint 2013: Setting-Up A Clean And Recoverable Development Virtual Machine

http://www.codeproject.com/Articles/490811/SharePoint-Setting-Up-A-Clean-And-Recoverable