Had one, mostly played it plugged into the wall. I was a big fan of Defenders of the Oasis and the Streets of Rage 2 conversion (it's not great, but good enough for 9 year old me). The Ristar port was pretty solid if memory serves me well.

They mod well these days and have replacement screens that have the correct ratio, which wasn't always the case. If you put a good screen into one of these things, they really pop.

I always recommended finding an old Playstation to learn on. They are incredibly simple in layout and the points take solder very easily.

Be sure to use some flux and you shouldn't have too much of an issue.

Hardware modding. Consoles, handhelds, old computers, RC cars... whatever.