The 2620 non-xm series routers provides a single 10/100 ethernet interface, with two WIC expansion bays and one Network Module bay. These are now-inexpensive routers very capable for a novice user to practice commands on. With additional equipment, you can practice by implementation. BE SURE to check with cisco.com on the peticular WIC or NM device you plan to purchase, as some are not compatible with the 2600 router series. Learn from my mistakes. lol.