I would like to upgrade from a bridge camera, which I have had for 6 months, to a DSLR. I have booked a basic camera skills course and would like a camera that I could grow with and add lenses to as needed. I am considering a Nikon D90, due the reviews I have read. My finances would stretch to this model but I would like to know what other cameras I should consider. I am really interested in landscape and macro shots. Could anyone advise which other SLRs I should look at. Thanks.