Step 4: Then in the downloaded zip file there will be a setup.
 
 

Free download sqlplus.exe.SQLS*PLUS PRODUCTS

 
Instant Client downloads for Microsoft Windows (x64) bit. The SQL*Plus command line tool for SQL and PL/SQL queries. If you need SQL*Plus you can download the Oracle Instant client from here. Install this and make sure you have the SQL*Plus exe on your path.