All the line numbers have changed and there are new schedules. 2018 has 6 new schedules and 2019 only has 3.
For 2018
2018 is a NEW postcard size 1040. Under the new tax laws, there are no more simple Form 1040EZ or 1040A's. Everything goes on a little Form 1040 that has six extra "schedules" with it. For 2018 the new 1040 is 2 half pages but now print on 1 sheet with the Signature line in the Middle.
2019
Here is the 2019 1040 return
https://www.irs.gov/pub/irs-prior/f1040--2019.pdf
or if you want bigger type use 1040SR for Seniors,
https://www.irs.gov/pub/irs-prior/f1040s--2019.pdf
2019 Instructions https://www.irs.gov/pub/irs-prior/i1040gi--2019.pdf
2019 EIC and Tax Tables https://www.irs.gov/pub/irs-prior/i1040tt--2019.pdf
2019 Schedules 1-3
https://www.irs.gov/pub/irs-prior/f1040s1--2019.pdf
https://www.irs.gov/pub/irs-prior/f1040s2--2019.pdf
https://www.irs.gov/pub/irs-prior/f1040s3--2019.pdf
