The federal form was a breeze, but when now that I reached the state tax, I hit something that has me scratching my head. It's called the Untaxed out-of-state purchases or services? Apparently, PA wants me to pay tax on items that I bought online (say, Amazon or eBay) that are out of state but are used or stored in the state. Do I really have to list everything I bought that I would have on record?
A lot of states are trying to collect sales tax for online purchases.
Not positive about PA, but I doubt they have any way of knowing if you purchased anything. At your income level, its doubtful your online purchases were significant, so if there is a penalty it will be minimal. If you feel you should, estimate a low amount.
The states have been trying hard to get places like Amazon and others to collect the taxes or give them the purchasing information, and as far as I know they have not been successful with either.
I gave in and just did it on TurboTax. I talked to a lady who said their free edition would be all that is needed, so I wasn't going to argue that!
Good choice and what I was going to suggest...hard to beat free.
When your income gets higher or your taxes more complex, I'd still recommend TT or something similar.
I did my own taxes for years. Thought I was fairly bright and should be able to do it. Finally one year I bought TurboTax and used it. Discovered I had been making an error for YEARS and not paying some tax I should have.

Fortunately it never got caught, but now I don't think twice about using TT. The time and aggravation it saves, not to mention avoiding errors, is well worth the small amount they charge.