Hello Sunnye,
The serial number is for 1911. Please go my Youtube channel for threading instructions - link below.
If you haven't got a front slide plate you can get one from
http://www.helenhowes-sewingmachines.co.uk and I expect other members will give you links for parts in the USA.
You might find my blog helpful too. You will find information under separate headings listed on the right hand side of the blog.
Good luck getting the machine up and running!