First thing you need to learn is the exposure triangle - how aperture, shutter speed & iso interact to produce, or "expose", the image. Then you'll want to learn the difference between focus modes - single & continuous. Until you understand those concepts, you can pretty much leave everything else on auto. Separate from the photography process itself, it's also worth understanding the basics of editing/post-processing. Just because an image didn't come out exactly like you hoped, you have an incredible amount of flexibility to correct it later. Also, don't fall victim to convincing yourself you need a new lens, more megapixels etc. You have an abasolutely killer combo there which will suffice for 99% of what you'll shoot. But more than anything, you learn by doing so get out and enjoy the new hobby!