Installed IBM SPSS for Linux

I am studying statistics and the course came with a license for the IBM SPSS statistics package (Version 23.0). But I only received installation disks for Apple OSx and Microsoft Windows, no Linux. So I went to the IBM SPSS site and downloaded a trail version of SPSS for Linux (all 890 Mbytes of it). Much to my relief this installed okay and when asked for a licensee, the one which cam with the disks was accepted. All I need to do now is work out how to enlarge the text of the SPSS interface so it is readable.