No. Online is only good for 1 return per account. But you can use the same email address for 5 accounts. How to start another return in the Online version
Yes. Or use the Free Edition or qualify for the Free File website.
There are 2 different Free versions. Turbo Tax Free Edition and the IRS Free File website. If you don't qualify for the Free Edition you might qualify for the Free File website.
There is also The Turbo Tax Free File program which is free for federal and state. And has more forms than the Federal Free Edition, like Schedules A, B, C , D, E, F, EIC, H, K-1, SE, etc.
To qualify for the Free File website you just need to meet one of these 3 things.
AGI $36,000 or less.
Active duty military with AGI of $69,000 or less
OR qualify for EIC (earned income credit.)
In order to use the Free File program, you have to start it at a special website. Click on Sign in at the top right. It may let you continue your return so you don't have to start over.