Temp-to-hire offer, worth it? - 13 weeks in

I got a contract offer for 13 months as an administrative assistant and I am unsure whether to accept. This is my first time dealing with any of this. The contract could extend. How did you handle benefits?

Thanks for writing this out. I went through something close to it 4 months ago, and it got easier once I kept a simple log of every call and form.