WINMOR is a Soundcard Mode and Packet requires a Packet capable TNC (Terminal Node Controller). For WINMOR 500 or 1600, all you need is an interface between the radio and the computer. (I like Tigertronics Signalink www.tigertronics.com). You can also use your internal computer soundcard connected to an interface to handle audio to and from the radio and also the PTT (push to talk) function). With an interface you can operate MANY different digital modes. (I usually use RTTY or PSK-31).
If you need study material, go to www.arrl.org and there you will find information on Amateur Radio Clubs in your area. Many of these clubs have license classes open to anyone that wants to pass their exam and get into the hobby.)
Thanks .....added to my read file for work......hope you and yours have a safe, healthy and happy new year.....