I'm needing a little help. I am AD Army and currently set to deploy in May. During my time there I plan to save up quite a bit of money and after I get back I plan to buy a couple of the CCNA or CCNP certification kits (router/switch kits). I also plan to get about 10 cheap but older working laptops as well as getting my hands on a few Operating Systems (Linux, XP-7, Server2k3-12, etc.). During deployment I plan to get my CCNA and MCSA (currently have Sec+). What I plan to do with this setup is create my own "in home/virtual corporation", I guess you could say, and try to create real-world problems within the setup or even invite experienced professionals to create the problems for me to go in and fix. The only problem is knowing that there are several different types of servers and several departments within any business, how would I go about actually completing this setup with just 10 or so computers (plus my own personal computer)? Would I be able to use virtual machines for this or would I need more computers? Thanks in advance.