The version of TurboTax you need will vary based on your specific situation. The following information may be helpful in determining the best option for you.
https://turbotax.intuit.com/personal-taxes/online/
Some other helpful information for 2018 Tax Year -- https://turbotax.intuit.com/tax-tips/tax-planning-and-checklists/tax-tips-after-january-1st/L8fY6OyF...