While Docroc speaks the truth, newbies do have to start somewhere and $900 ain't gonna buy diddly at a dealer. Even a Good Guys or Best Buy. So let me stick my neck out a bit. Given the limited budget you'll want to look for an integrated amp OR a CD player with a volume control. That equates to fewer cables and components. If you don't already have a CD player be sure to get an "all-in-1" (i.e., not a separate transport and DAC). I'd suggest a CDP with volume control and a non-integrated amp as it provides more options for future upgrades. As for speakers, consider monitors as they'll offer the best quality. A sub woofer could be added later to extend the bottom range.
Took a quick look here in the Classifieds and it is possible to put together a system for $900. There was a Creek integrated and Marantz CDP that both have good reputations. Saw several speakers that might pair with them as well. BUT not knowing your musical preferences AND not being intimately familiar with the listed components and how they would interact with each other in YOUR room I'm not sticking my neck out any further. If you see a combo that looks interesting feel free to post a query on them as someone may well know how they would match up. Be sure to include info on your musical tastes and listening environment. Good luck!
Took a quick look here in the Classifieds and it is possible to put together a system for $900. There was a Creek integrated and Marantz CDP that both have good reputations. Saw several speakers that might pair with them as well. BUT not knowing your musical preferences AND not being intimately familiar with the listed components and how they would interact with each other in YOUR room I'm not sticking my neck out any further. If you see a combo that looks interesting feel free to post a query on them as someone may well know how they would match up. Be sure to include info on your musical tastes and listening environment. Good luck!