Do stores near you carry fresh or frozen ravioli? The bags I buy in the USA have microwave steaming directions on them, but I don't know if they're available in Germany (stuff I really take for granted in the USA is frequently unavailable in other countries, and vice versa, so I hate to make assumptions that you have access to these.). If you can get your hands on fresh or frozen raviolis (and probably tortellinis, too) I can get you preparation directions from my bags.

I've seen this advertised on tv but don't know if it actually works: http://www.fastapastacooker.com/ (warning: sound plays automatically when the site loads. UGH.)

Here's a discussion on cooking pasta (which recommends couscous, which you might enjoy as well) http://chowhound.chow.com/topics/455575

One thing that's pretty good and fast, if you have leftover pasta (or rice) and broth is to combine the two. Throw the starch into the broth and you have a quick soup that's more filling than broth alone. If you have leftover chicken and/or suitable veg that can go in as well.