Deductions & credits

What specific information are you looking for?  The Schedule C Depreciation Report gives you information on how depreciation was calculated for a particular asset, including method and convention.  [See screenshot below.]

If you are using the CD/Download version of TurboTax you can view the report in Forms Mode, as well as the individual Asset Entry Worksheets.  From the asset worksheet, you can click a link to view the amortization (asset life) schedule.