I must have missed this thread at the beginning of the month! I have a couple of Aglaonema plants.
Chinese Evergreen (Aglaonema 'Siam Red') Chinese Evergreen (Aglaonema commutatum)
Chinese Evergreen (Aglaonema 'Silver Bay')
Chinese Evergreen (Aglaonema 'Creta')
As Purple/Tiffany mentioned, leaves tear due to being moved around at garden centers, in shipment etc. and leaves sometimes turn brown ... I just yank them off but you can be more gentle and snip them with scissors.
I don't like the flimsy nursery pots so I usually re-pot my plants after purchase into a more decorative container, especially if it's going to be inside the house; or I camouflage the flimsy pot by sitting it down into a prettier one. I use a fast draining, chunky potting mixture for all of my plants; a combination of potting soil and orchid bark mix but adding extra perlite to potting soil will help with drainage too. Just be sure that whatever container your plant is growing in, that it has good drainage. If the pot has no drainage holes, be very careful about watering so as not to incur root rot. Sometimes soil looks very dry on top and may even feel dry an inch or so down when you stick your finger in it but if there is no drainage in the container the soil at the very bottom where the roots are can get soggy and cause rotting of the roots.