First I have question about Dilek-şartın Hikayesi

*Kardeşim doktordur. Ben de doktor olsaydım kardeşimle birlikte çalışabileceğiz.

When Dilek-şartın Hikayesi is used, I wonder  for  the second part of the sentence

Ex; Sen buraya gelseydin, hep beraber olacağız  OR

Sen buraya gelseydin hep beraber olacaktık

And can somebody pls explain what is the meaning of Di’li Geçmişin şartı?

It has simple explanation and its same as "If clauses" in English.

ty

No, harp00n, it´s simple for you but it´s not simple for a learner. It´s one of the trickiest things in Turkish syntax.

There are many old threads about the issue. Henry has made a kind of a summary in this thread and there are also some great posts from scalpel:

          http://www.turkishclass.com/forumTitle_52547

The old Erdinc´s post that Henry refers to is this:

          http://www.turkishclass.com/forumTitle_1065

Read them. At least you will get started, lana-.