One special tip I stress to my students is to always remove the thread spools, bobbins, and the machine needle at the end of each project.
In home sewing and crafting on a sewing machine, it's rare for the fabric to be exactly the same for every project so the needles and threads used on the machine will need to be of different sizes and types depending on the thickness and type of the fabric.
Making a habit of always removing the needle and threads will prevent sitting down at a machine loaded with the wrong needles and threads for the next project. Avoiding the frustrations of broken or bent needles, and puckered stitches due to using the wrong needle and thread for the fabric means a project completed with a smile:)
By FrugalSunnie from Scotland
An excellent tip! Thank-you, I was forever breaking the 'wrong' kind of needle... but no more ;-)