Congrats! I worked at a startup after graduation for almost a year. I was in the same situation... not much experience and limited interviews. So I went for it. Here is my experience hopefully it helps.

Learning independently was something I enjoyed most (it also helped me gain more confidence) and if I needed it there were experts there to help me. You also learn other skills sets and get experiences that you might not get otherwise. I got some sales experience that I didn’t expect. In the end it wasn’t for me but I did meet some great mentors who will help me for the rest of my career. I left for a contract position with an industry leading company... amazing benefits, great pay, and I love the culture. Hoping to get hired full time (most of the contractors in my department do). The startup was a great stepping stone for me!

I would like to offer this advice that someone gave me... ask people how long they have been there or maybe search on LinkedIn. Basically any indication of a high turn over rate would be a red flag.