As a beginner, any of the Canon range will suit. It just depends on how much you want to spend. Of all the Canon models on sale now, none are going to be bad. As for lenses, well that is where you need to look for the genre you like to shoot. Building etc often lend themselves to a reasonable wide angle cause you can get in reasonably close and still not miss the edges of the buildings. For leaves, bugs etc, you need to consider a macro lens.

Your big learning curve ahead is how to use all the functions of your camera, with the right lens choice, and good composition skills to get a great shot to start with, then the editing skills come in to make that great photo a superb photo. Just getting a DSLR does not make your photos better. 80% or more of a good photo, is the photographer.

So welcome to AP, you have a huge learning curve ahead of you.