It's windows only. The install guide you have is the best document. If you are using Server then you must have a license agreement, so you can therefore contact Tableau Support for help through the Customer Portal.
Thanks for your response.
i guess to use Tableau Desktop also we need to get the license. only Public we can use freely. But we can get the 15days trail versions of both server and desktop ???
The 15 day trial is Desktop only. You need to contact the sales team to download server if I remember correctly. The sales team are very good. See the Contact Us link on the Tableau website. Not sure where you are based, but there also a number of Tableau Consultants about to help you discuss your specific requirements. For example in the UK, The Information Lab. The link will also give you a number of Tableau resources.