Today you get only 1 bitcoin. No bitcoin cash or gold or whatever forks that may exist. Think of this way, there is a ledger - bitcoin which shows I own 1 bitc

Today you get only 1 bitcoin. No bitcoin cash or gold or whatever forks that may exist. Think of this way, there is a ledger - bitcoin which shows I own 1 bitcoin on 1st August 2017. Someone copied the ledger. Now there are two ledgers both with name bitcoin. It is confusing - so one is called bitcoin cash. Going forward, the transactions for bitcoin is recorded in the bitcoin ledger while for bitcoin cash in that ledger. I can spend both bitcoin and cash as my ownership is reflected in both the ledgers. But if you buy from me today, your ownership reflection will start now. So only on one of the ledgers. In November someone will create a new copy - the Segwit 2x. So if you own the bitcoin till then you get 1 bitcoin Segwit 2x too, while retaining the ownership from original bitcoin ledger.