You will not go wrong with either Nikon or Canon. Both are good brands with a good line up for bodies and lenses either new or used. It is like personal preference. Do you like the color yellow or the color red?
Ask yourself do you have more friends using Nikon or Canon? Why is this important? It is because you seemed new to DSLR. It is a very steep learning curve. So it helps to have friends with the same system to help and guide you,... as well as to borrow lens from.