Once you have logged in, click on your name and then the 'Profile' button in the upper right corner.
From here you can do all sorts of things like update your family's contact information, look at the groups you're in, check your attendance in services, and look at the groups you serve in. If you click on the 'Financial' tab it will bring up your giving information.
If you click on 'Giving Statement' in the lower right MyHarvest will give you some prompts to follow to retrieve your statement.
In the first dropdown box you can choose to see your individual giving statement or one for your whole family.
In the second dropdown box you can choose what timeframe you want the giving statement to cover. For your 2017 tax return, you should be interested in the option labeled 'This Year'.
In the final dropdown box you should select the option for 'Deductible Only' to see the tax deductible gifts you have given to Hickory Harvest.
That's it! You're done. You can click 'Run Report' and come back to see your giving statement any time!