Hi Dimitry !
If you seriously want to use Idempiere lateron
dont waste yuor time and join the ERP-Academy by Chuck Boecking !!!
Its 199 US Dollars per Month and more then definitly worth it !
He will be happy to answer your questions 1) in 4 Meetings per week (tue: 2,thu:2) and also answer REALLY tries to answer your questions inside his own private Google-Group !
I did the BIG mistake to wait and hope I understand all the conepts by myself for over a year.
Easiest way is to go to
and pay the 199 Bucks with Paypal (or use your CC instead, possible too in there )
Hes absolutely serious, very friendly and knowing about all the concepts inside Idempiere !
Please feel free and doubt all this because of the Money, and wait untill guys from the Idempiere - Core confirm my post !
Regards
Florian