Don't be put off - they're simply names for assorted programmes. Safari's the web browser; Tiger (older) and Leopard (newer) are consecutive versions of the operating system; you're only going to need BootCamp (as in boot-up) and Parallels - which do slightly different things - if you want to run Windows and Mac on the same physical machine. (Don't know what 'proprietary altered Java' is though, having not come across it.)

They're no harder to use than any other applications doing the same jobs -

BTW, the email programme has the staggeringly outrageous name of "Mail"!