for first printer

If you're new to 3d printing (FDM in this case) there's a few common things that will help your prints. First bed adhesion is key. If the 3D printing filament doesn't adhere properly to the bed on the first layer, then the entire print will fail.Spend the extra time and make sure your bed is level and dial in the Z height. Plus avoid drafty rooms and think about a simple enclosure for your machine. Keeping your printed part at a uniformed temperature will save many medium or large prints.
Second, look at your extrusion settings in your slicing software. By default, most package will tell you to print at 100%. Which in my experience leads to over extruding plastic out of your printers hotend. Which leads to a loss of detail. My machines are set to 92 to 94% extrusion.
For printing my models, I generally set my layer height to 0.2mm with a perimeter of 3. While the infill is set to 15 to 20%.
good luck!!