FutureBillionaire....
If I can make a suggestion, learn to program relational databases. Structured Query Language (SQL or sequel, depends who you talk to), is easy to learn and is essential in developing other software applications. If you are not familiar with relational databases, examples include: MS Access, MS SQL Server, Oracle, MySQL.
MySQL is open source, and,
Oracle and
Microsoft offer express editions which are also free. FileMaker Pro is also a relational database but is based on scripting language, ScriptMaker, and not SQL. If you are new to databases (or not), I recommend two books by the same author, Michael J. Hernandez,
Database Design for Mere Mortals and
SQL Queries for Mere Mortals.
Both books are applicable to most relational databases and helped me immensely while learning about databases
I hope this helps with your decision.