Car won't start, but only sometimes. Only had car 2 months.

What is your question?

Car wouldn't start, battery seemed good, all lights on. Radio would play but I turned it off, also fan so as not to drain battery. Kept turning key for about 3-4 minutes, finally started. Three weeks later it happened again. Took more time turning the key many times to get it going. One week later I turned key for at least an hour, simply would not start. AAA brought it home, where it's been sitting. Been sitting in driveway for almost 2 weeks while we're trying to find someone to work on it. Husband just tried to start it and it started. But I'm afraid to drive it now, not knowing what's wrong. It's winter, I don't want to be stranded in the cold. Would appreciate any help or ideas.