Do not interfere with movements of the 3D printer mechanisms during the operation: this can result in personal injury or damage to the device.
Do not touch the nozzle or the platform during the operation: they heat up to high temperatures. Touching them may result in a burn.
Unpack the spool. The filament end is under the sticker. Please make sure the filament end is not deformed. Otherwise, cut part of the filament with the pliers available in your starter kit.
Use only 100 mm wide spools.
Always hold and fix the filament end while installing and removing the spool into/out of the printer. Prevent filament tangling in the spool: it may cause an abnormal stop during printing and damage the printer.