Filmtober is an annual month long celebration of film photography and was started by Jason Avery on Twitter. The idea is that for the entire of October, there will be a question every day relating to film photography, you can win prizes from this years Sponsors Ilford Photo and the online film photography shop, Jack the Hat, there is a third sponsor yet to be announced. To take part you can use #filmtober and #filmphotography, you can ask @JasonAvery for more details on Twitter. If you check the hashtags, you will see the fun people had last year with this. I have included the details of the organiser and sponsors below.
https://www.jackthehat.co.uk/
https://www.ilfordphoto.com/
@IlfordPhoto
@JackTheHatPhoto
@JasonAvery