The T1 is the main form of a Federal personal income tax return. You can read more about it on this blog post: https://turbotax.intuit.ca/tips/how-to-get-a-copy-of-a-t1-general-return-10743
The T2125 form is where you would report self-employment income. You can read more about it on this blog post: https://turbotax.intuit.ca/tips/t2125-tax-form-declare-income-and-expenses-from-a-business-or-profession-394
If you have TurboTax Live Assist & Review, here is how to talk to a Tax Expert: https://turbotax.community.intuit.ca/community/navigating-turbotax/help/i-m-using-turbotax-live-assist-review-how-do-i-talk-to-a-tax-expert/00/873764