NEW to CLASSIC LADDER~

hello everyone, i am new with EMC2's classicladder. i want to learn sth about it. is there any PDF available? can sb show me some useful documents?? and i wonder how to start the PLC modal?
PS: i used to handle my work with EMC2 to mill works~~but i am only familiar to EMC2's UI,(eg:AXIS,TkEMC~~) that's just what i know~~so pls help~

Hi
The EMC2 integrators manual has info on Classicladder:
PDF and HTML here:
www.linuxcnc.org/docs/
also the wiki:
wiki.linuxcnc.org/cgi-bin/emcinfo.pl

To start Classicladder in EMC you must add the realtime and user components. see the manual
If you use Stepconf then click the ladder button, it will add the components

If you want a standalone Classicladder open a Terminal enter 'halrun<enter>'
then enter these lines:

loadrt threads name1=med period1=100000000
loadrt classicladder_rt
addf classicladder.0.refresh med
loadusr halmeter
start
loadusr -w classicladder

This will start classicladder and a hal meter which will run until you close classicladder.

sounds great~!!! but still i found huge differences between EMC & EMC2, since i had read some PDF about EMC & EMC2. i got confused, what i only know now is that i am using "Ubuntu 8.04&EMC2 Live CD " version. oh, the work is so hard!! so can you tell me about EMC & EMC2??