Although my introduction to computing was through what you might now consider antiques, I have moved with the times, especially in recent years. I have built numerous PCs over the last few years, including several of my own, fortunately relatively unchanging these days, which is just as well as it's difficult to find the money to upgrade them.
My current main expertise lies in the building of PC systems from board level, and configuring them with operating systems. My personal preference is for Linux, particularly the Debian distribution, but I also use FreeBSD with some enthusiasm and OpenBSD and NetBSD with slightly less, and have had experience with more common operating systems, including MS-DOS, and Windows. Solaris is well known to me as well, and I have supported HP-UX in past work. I have some knowledge of Macintosh and Archimedes systems, though it's all a bit out of date now.
My latest bit of tinkering has resulted in me setting up a computer to run Asterisk, and I have connected the household's telephones to it, as well as using softphones. One of my phones is an old Post Office 746, fully converted. It was not properly converted when I got it, and a few things came to light which people interested in this might like to read about. So, here is my document on converting, and verifying proper conversion of, the Post Office 700 series of telephones. Further, I have even overcome the contention between fax and phone calls by combining fax sending with Asterisk. For receiving, I use a provider who provides fax to email and allocate some of my numbers for it. See my fax for two with Asterisk and HylaFAX (1) for details on how I did it.
(1) I should point out that HylaFAX is a trademark of Silicon Graphics.