I love my serger don't know what I did without it . when to girls and grandchildren come by and want me to shorten pants there it is in fact I have 2 will never get rid off them good for edging fabric before washing I don't use the sergeer for piecing quilts but have known to made a swimsuit or 2 or used on jersey fabric helps with the streach of the fabric. as for threading the machine I just cut the thread close to the old spool and tie the new spool on and gently pull the thread through being careful when you get to the needles you might have to pull each thread through singly good luck. Noella