You can use any version of TurboTax Online to prepare your tax return with, even Free! Our Premier version provides more guidance on investments, but every version of TurboTax will allow you to enter your mutual fund sales.
You can always do a "test drive" and start with a lower version of our Online software, then if you would like more guidance, you can upgrade and your information will carry over to the upgraded version. Just remember you cannot "downgrade" back to the lower version. With the Online version, you do not pay until you complete your return.
Here's a link to the complete TurboTax line-up: TurboTax Online Software.
If you prefer to use our Download version and install TurboTax directly on your computer, you'll need to purchase a version of TurboTax and install it. A description of these different versions can be found here: TurboTax Download Version