Right right right, looks like it's time to set some shit straight here...
Saabs are not inherently unreliable, you just have to know what you're doing with them. That means you'd better be on top of your maintenance, you'd better know exactly what's going into the thing, and if you buy used, you'd better know exactly what was done to it beforehand. There's a little bit of leeway in some areas, but you really have to be dead-on with the schedules.
Now that said, not all of them are as finnicky as some can be, since NG900s and most if not all 9-3s don't have the same sludging risks as 9-5s. And the all-important computer functions are not inherently fearsome; if anything, they make diagnostics way easier because they're so sensitive to what's going on at an ionic level.
There's way too much to explain in just one post, so here's a few resource links:
>saabcentral.com/
Their "information" sections are a bit out of date, but the forums are chock full of how-tos, oddball inquiries, and absolutely necessary data.
>youtube.com/channel/UC0Ilmq-1TepHfNzSvANiM5Q
Phenomenal channel with all sorts of details and tricks. Updates constantly, and very quick to answer questions.
>eeuroparts.com/
AMAZING parts source. Just know that unless you want to pay a mint for shipping, it's probably going to take a few days to get to you. They do, however, have all kinds of neat deals and occasionally partner with sites like SaabCentral to offer discount codes.
>genuinesaab.com/
These guys have a decent selection of tuning stuffs, from flashed ECUs to freeflow exhausts and forged pistons and all that fun stuff. I also really like their accessories, because I'm a dweeb.
And remember, aftermarket DICs are ALWAYS a dice roll. Your best bet, cost be damned, is a genuine Saab/SEM DIC.