1. Whether you have to pay quarterly taxes depends on your other income and total tax liability. You might want to consult an accountant since you are starting a business to learn how to conduct it properly.
2. All income must be reported but self employed income under $400 is not subject to self employment tax.
3. You need your W-2 to report your income from your employer and 1099-misc forms and/or record of cash/check payments for your business to complete Sch C.
