Dan, at this point, it may not be worth it to try to save these. If you go to a local nursery, you can probably pick up a few house plants. But ask them to help you pick and tell them about where you want to put them, how much light they can get, etc. They'll advise you as to care. And you probably won't need to transplant them for a while. It's much easier to learn this way.
Most likely, they'll come in plastic pots which are just fine. As for potting soil, if you do this, you won't need to worry about that for a year or two. If you get something that's in a clay (terra cotta) pot, those aerate well, but that also means that the soil can dry out faster than with plastic pots.
As far as plant food, again, ask at the nursery. And you can ask here too (I think we have a houseplant forum too!) Also, follow the directions on the package, and be sure not to overfeed. In the case of plant food, more is not better.
As far as watering is concerned, a general rule is to stick your finger into the soil down to about an inch. If it's dry, then water. If it's moist, wait. And don't allow your pots to sit in water. So if they're in a saucer and water comes out the bottom of the pots, throw out that water. Keep in mind that different plants have different water requirements, so again, ask about each one at the nursery. You can write down the answers and keep them near each plant. Don't accept answers like "water about once a week" because conditions will influence how often you need to water. Ask for specifics: How can I know when I need to water?
I hope this is helpful to you. Easy, low-light plants include pothos, lipstick plant (see? your choices were good!) and peace lily. Oh! And Mother-in-law's tongue!
Good luck, and do let us know how things go.
