Hi Rebecca and Welcome to TP
with the name and avatar i'm assuming you're not a 6'4 lumberjack with hands like shovels, so the system you're looking at investing in needs to fit your hands.
best bet is to go to a dealers and have a fondle :nuts: oooeeer of the cameras available.
All of the DSLR's on the market are very capable, it's just that some systems have been around more, so second user lenses etc are more abundant.
you haven't mentioned budget? good glass is Very Expensive, this site will do wonders for your photos but terrible things to your bank balance!
systems to investigate would be Canon - most common
, Nikon, :razz: olympus
pentax,
the newcomers, Sony, samsung etc I dont have any experience of, maybe someone with that experience may like to comment ?
so dont just think camera, you need to think lenses, flash, etc before you commit to a system, because it's expensive to swap systems
just my 2p
I'm not biased at all.. honest