It is a very good camera and I can understand exactly what you mean by having a lot to learn. Very versatile and quite difficult to remember all the digital controls. Shooting in auto mode is a good way to start. Aperture priority mode, wide open good light gathering qualities and for your garden photographs will do a lot of good. It has a small sensor, smaller then full frame and APSc so not exactly wide angle that 28 becomes about 30 on this sensor size but wide enough. Plus macro telephoto, enjoy its capabilities.
Regards,
Arif.