Hello and welcome to the communities.
Basically you will need to use an external USB drive, copy them over the network, etc - just like you would with a new physical machine.
Brian Atkinson | vExpert | VMTN Moderator | Author of "VCP5-DCV VMware Certified Professional-Data Center Virtualization on vSphere 5.5 Study Guide: VCP-550" | @vmroyale | http://vmroyale.com