[Asterisk-Users] want suggestion to get hardware to learn

[kemal asad]

I know nothing about telephony ip phone etc.. however i have a few $$
that i am willing to spend to learn Asterisk . and i am very very
curious, i believe in learning by doing( but with some hand holding) so
i am looking for equipment suggestion . can anyone suggest a set of
equipment i could get to check and test the cool functionalities of
Asterisk. Computer , Phones, communication cards. i already have the
following:
ADSL static IP.
a second phone line
 a router with dhcp 
 a computer(RH9.0, 1 network card, one 56k PCI modem card)
 a small ethernet network.
if you have any suggestion please be specific exact equipment
description shopping location , estimated prices.
Thanks a lot.
any help in feeding my curiousity is very much apreciated.
Kemal