I am a full time W-2 employee. I do some consulting for others and received a 1099-Misc. The work is similar to my full time job. How do I enter consulting work in TT?

By receiving a Form 1099-MISC for doing consulting work, you are required to file a Schedule C.  Here are the steps:

In TurboTax online, 

• Sign in to your account and select Pick up where you left off
• At the right upper corner, in the search box, type in schedule c and Enter 
• Select Jump to schedule c
• Follow prompts

Besides reporting the business income, you are allowed to deduct any business-related expenses to reduce the income.