What is update version of SharePoint currently used ?

Accepted answer

You can use SharePoint 2016 or SharePoint online. Please try to gain good knowledge in Azure Admin so it will better for your future.

Thanks Nilesh and Rajkiran.

It's SharePoint 2016

You can try SharePoint without any installation with SharePoint Online too which is offered as part of new Office 365 subscription.

If you want to create a new developer account in Office 365 so that you can play with SharePoint Online, then I suggest you to read my blog here:

http://www.c-sharpcorner.com/article/introducing-microsoft-office-365-developer-program/

please mark my answer as "Accepted" if it satisfies your question