My husband (Dennis) passed away Oct. 18,2016. I put this in my name. Should I have left it in his name?

You can still file jointly. The IRS views you as being married the whole year. Let me know if you have filed yet or not and I can help you further.

I am just starting my 2018 taxes. personal info.

@generj What is your question?  You can't do 2018 online anymore.

 

How to file a prior year

https://ttlc.intuit.com/community/using-turbotax/help/how-do-i-prepare-a-prior-year-tax-return/00/25984

 

Or If you have a simple return You can fill out the blank forms for free.

Here is the new IRS 2018 Form 1040

https://www.irs.gov/pub/irs-pdf/f1040.pdf

And instructions  https://www.irs.gov/pub/irs-pdf/i1040gi.pdf

2018 Tax and EIC Tables https://www.irs.gov/pub/irs-pdf/i1040tt.pdf

 

IRS 2018  Schedules 1 thru 6 (only if needed)

https://www.irs.gov/pub/irs-pdf/f1040s1.pdf

https://www.irs.gov/pub/irs-pdf/f1040s2.pdf

https://www.irs.gov/pub/irs-pdf/f1040s3.pdf

https://www.irs.gov/pub/irs-pdf/f1040s4.pdf

https://www.irs.gov/pub/irs-pdf/f1040s5.pdf

https://www.irs.gov/pub/irs-pdf/f1040s6.pdf

 

Don’t forget your state.  And you will have to print and mail your returns.  So be sure to attach copies of your W2s and any 1099s that have withholding on them.  You have to mail federal and state in separate envelopes because they go to different places.  Get a tracking number from the post office when you mail them for proof of filing.