It won't ask specifically about cryptocurrency. Cryptocurrency is handled in the interview for stocks, property and other investments. Cryptocurrency is treated like other capital property and you owe capital gains tax on the gain if you sell for more than you paid (or you have a loss if you sell for less than you paid.) The list of capital property includes stocks, property, collectible, and "other items not listed"; choose that. You will need the date purchased, purchase price, date sold, and selling price.
Importing of .txf files is available, but only in the desktop (CD/download) version of TurboTax. It is not available in the Online version and not available in the dedicated Business Edition. PDF import is not available.