Urgent Problem With Sewing Machine

Hello can anyone point me to a u tube video that demonstrates threading a new home janome 921? So I can thread the machine and have a play with it? Thanks so much

I have an all-singing all-dancing sewing machine which supposed to do embroidery, buttonholes etc. it is almost 40 years old and it doesn't work properly. In desperation, I got out my even-older one, one that is dated 1898 - and it works perfectly!