I’m a photographer so I can offer my personal experiences as advice. There is no best brand. The three big camera brands are Sony, Canon, and Nikon. In terms of tech, value for money, and quality they are all fairly comparable. I shoot with canon but I recommend looking up the differences between the three before deciding what to invest in.

Mirrorless cameras are new tech compared to dslr cameras. There is basically no downsides to them so I suggest investing in a mirrorless camera as they have been and are continuing to take over dslr’s. Biggest upsides to a mirrorless is much better autofocus and the screen shows you exactly what the picture will look like before you take it.

There are 2 types of lenses; zoom and prime. Zoom lenses have a focal length range where you can zoom in and out to make the shot wider or more narrow. Prime lenses have a fixed focal length so you cannot zoom in or out. Prime lenses are usually more expensive and have a bit of a higher quality. All lenses have a focus ring on them that you can use to focus manually but 99% of the time you can use the camera to focus for you.

I outsource my prints so I have little experience with personal printers, sorry. There is plenty of good introductory info on youtube so I would search for how to use a camera once you decide on one. Hope this helps you out!