There are many here with much more experience than me...I have been thier student here for the last year  
  Last August I started with five day old chickds purchased from my local feed store.  It went easy & well - and I was HOOKED!  On February 18th I received my order for 16 chicks from Ideal....then bought 10 more from my feed store...then bought 2 more from the feed store the next week - for a total of 28 right now (plus the 5 older girls)
Here is what I have done:  
   *   I kept all my chicks in 2'x3' cages leftover from when my husband was a small child (there were two cages).  They were crude, but were sturdy and safe - made with wood and hardware cloth.
   *   I hung an infrared heat lamp and adjusted it so one side was @ 90F and raised it up each week to lower the temp by 5F each week.  They are at 3 weeks old today & my temp is at 80F and will stay there until they finish feathering out.
   *   The chicks stayed in the above mentioned cage until 2 and a half weeks - then I moved them to a larger "grow out" coop/run.  They have 25square feet of space & plenty of room to grow and move around.
   *   I moved the heat lamp out with them (like I said, still at 80F) to this bigger nursery area.
   *   I have a hanging chick waterer and a hanging chick feeder....it's important to have chick sized items so they don't drown in their waterer - or even just get wet/chilled in it.
   *   I use pine shavings on the floor (beginning around the 3rd day).  Prior to their 3rd day, I just used old towels so they could get thier legs under them...newspaper is slippery and shavings can be a challenge for their strength and coordination.
   *   I use chick starter WITH antibiotic (to prevent coccidiosis).
   *   I clean their waterer twice per day and bleach it once per day.
   *   I offer them a little bit of chick grit once per day.
   *   Keep drafts off the babies.
   *   Watch for poopy butts and clean with warm, wet washclothe as needed if needed.
   *   The sleep frequently for short naps during the day.  When they sleep, they look dead...but they're fine.
   *   Sometimes you do everything right and you still lose some.  It happens.