Since you lived in the home less than 2 years, you do not qualify for the home sale exclusion*, so the entire $30,000 gain is a taxable long term capital gain. Since you sold it in the only year that you had rental income, you are not required to claim depreciation**. You can split the gain between form 4797 and 8949, but for simplicity, you should use for 8949 (for most people, the tax comes out the same). Report it as the sale of real estate. The online version of TurboTax (TT) basic can not handle this. The download/CD versions can.
*If you had to sell because of a job relocation, or other "unforeseen circumstances", you may qualify for a partial exclusion. See https://www.nolo.com/legal-encyclopedia/the-partial-home-sale-tax-exclusion-irs-approved-unforeseen-...
**It may appear that claiming depreciation may save on taxes, by reducing the rental income (or increasing the rental loss). But, you will than have to claim depreciation recapture, which will offset the tax savings. Depreciation recapture is taxed as ordinary income (but not more than 25%), not at long term capital gains rates.
