It's a Janome twin of some sort (Janome owns the Elna brand and produces virtually identical machines under both names). Look at some of the current Janome offerings to see what it corresponds to and you'll likely find more feedback than looking at the Elna version. What you learned to sew on was a different company's machine. They are no longer around.
My initial look says it's a Janome Skyline S5, so look for reviews and posts of that machine.