You are a US resident as of January 1, 2018. You should file a 2018 US resident return and can use TurboTax. You can file a married filing jointly tax return is your spouse is a US resident.
If your spouse is a nonresident, you can make an election to file a joint tax return. You will both need to file declaring your worldwide income for tax year 2018.
Please see pages 8 and 9 for more information on making this election (if it applies to you) in the attache IRS Publication.
Publication 519