How to automate CSV-exports of queries in PL/SQL Developer (Oracle)?

I’m no pro in Oracle or PL/SQL Developer (I mostly use and admin mySQL and MS SQL Server).

I’m not an admin of any sort, but have read access to many tables in Oracle via PL/SQL Developer.

I need the ability to schedule an automatic (say, daily) export of a few tables (well, queries) in CSV format. Whether it’s to my local computer, network, email — anything.

Does anyone know how this might be achieved?