To help minimize mistakes throughout your workflow, you can set up your favorite way to import files into Lightroom and then save them as presets. To do this, select your source on the left, by choosing your card reader, navigating through connected drives or by using the downward facing arrow to select from common locations. Then select how you want to import the files (Copy as DNG, Add etc.) and choose the options that make sense for your workflow on the right (Adding metadata, renaming files etc.). When finished, click “None” in the Import Preset drop down menu (at the bottom-center of the window) to save your settings as a new preset.
After defining your preset(s), you may want to tap the Tab key to display the window in it’s “Compact” format for ease of use on subsequent imports (where you can make changes such as keywords and metadata with out having to return to Expanded view).
And don’t forget, you can choose to eject or un-mount a volume from your system after import (using the checkmark next to the volume), and preview the size of the import using the File Size indicator in the lower left of the window.