"My father passed away January 30 2019. Do I file 2018 taxes normally? "

[rnrmcelroy]

Do I answer yes to the question of death before filing this return?

Also should I change the contact and addresses to my address/phone?

[CynthiaR]

Deep condolences on your father's death. 

Be sure to put the date of his death on the tax return.   You would file his taxes normally as if he was alive.   You would sign the tax return as his personal representative.   Here is more information on this subject:

https://ttlc.intuit.com/replies/5232309