THe most important thing, IMO, with a camera body is the ergonomics. Go to a shop and work out how they feel in your hands. Do the controls make sense etc.
For lenses, start with a kit lens until you get a feel for what you want to photograph. After that the sky is the limit, but your first lens will give you clues as to where you want to go from there. More by want it can't do than what it can. Do you want to shooot in lower light than it can handle happily? Do you wish it had more zoom, or went wider or get closer to your subject? etc.
WHen you are looking, keep an eye to the future. This probably won't be your last DSLR. Is there an upgrade path in bodies? in Lenses? will my old lenses fit my future camera? etc. (Lenses last longer than bodies these days)
Keep in mind you will also want to budget for accessories. Perhaps not straight away, but you may want better/off-camera flash, a tripod/monopod, filters, lens cleaners; sensor cleaners. And they say buying a boat is like buying a hole in the ocean to pour money into