I would like to download and start learning Oracle. I see that 11g XE is a free version, as is SQL Developer for the front end. Version 12c is out now - is that a free version that can be installed on Windows 10 - 64-bit? Are there any other free resources?
To learn I would use XE. It is very easy to install/uninstall and administer using sql developer. The normal production database (not XE) is MUCH more complex to install. Also XE is designed to play nice on a workstation, the standard database grabs as many cycles as it needs and you will find that your workstation will run as slow as molasses.
You do not need a parachute to skydive. You only need a parachute to skydive twice.