ive knitted myself a jumperand i have to join the bits together…the knitting pattern says
’join the neckband by top sewing. join side and sleeve seams by backstitching omitting rib , join rib by top sewing’

i dont understand how to sew knitting , i m probably being really stupid but can someone help me out!

Try this article from knitty. The illustrations are very helpful!

If the article doesn’t help, let us know!