<human>: Condense the text into a few key points

I've spent the past year overhauling my lifestyle - what I eat, how active I am - and I've even started running (although I'm not that great at it, yet). In the process I've lost 40lbs and gained a whole lot of confidence.

Until I joined this gym.

Just for signing up I got some free personal training sessions. I'm completely terrified. I've never set foot in a gym before - and even though I'm healthier than I was, I'm by no means a fit person. I know that not everyone who goes to the gym is crazy fit and knows how to use absolutely every machine. And I know that my personal training sessions will help me familiarize myself with the gym and how it all works. But it's still not stopping me from freaking out just a little.

Any advice/tips to help me get over these new gym jitters?
<bot>: Joined a gym for the first time ever. Freaking out. Any advice/tips on how to chill out and enjoy myself?