The new IRS Form 1040 replaces the old 1040A, 1040EZ, and 1040. It’s a half page double sided form supported by six new numbered schedules in addition to the old Schedule A, B, C, D, E and F.
There is an IRS cheat sheet to help you figure out what Schedule 1-6 your should use now. Also there is still the checkbox for whether or not you have full-year health coverage. IRS reminds taxpayers the law was still in effect for 2018. Income from Schedules C, D, E and F are now reported on a Schedule 1. AGI is now line 7 (not 37) so be careful when using other forms that ask for it. Tax payments have been consolidated into one line and use Schedule 5 with the 10 lines you were used to. If you want to designate another person to discuss your return with the IRS, use Schedule 6.
The new 2018 Insruction booklet can be found here. California did not update its tax law to conform with the new federal rules, which means you can still claim your itemized deductions on the state return. Anything that was deductible last year is still deductible, and state tax rates have not changed.