I agree with the suggestions to just pin it up some kind of way or put it in a ponytail if it comes out looking crazy. I don't really have any better advice.
I do have suggestions for pin curling to keep your ends curled as well. How you should do it depends on how you want your hair to come out. If you want spiral curls all over, the video posted is a good place to start.
I generally wear my hair as you have it in your siggy, with varying degrees of curl and straightness, depending on my mood. If that is how you like to wear your hair most, I have suggestions for that. I will frame my advice assuming you will be flat ironing, and not blowing your hair out.
My advice is, if you have thick hair and/don't want your hair to seem too flat or lifeless, yet also don't want a million tight spiral curls, not to use bobby pins, at least while you're starting out and not very proficient yet. They can leave dents and make your hair more prone to dents and becoming flat if your head becomes hot from sweat or steam (shower).
Instead, use the silver pins used for magnetic rollers. I only use bobby pins on rare occassions, if I don't have enough of the silver pins.
To keep your ends curled, tuck them. I pin curl using several combined techniques, but I think a good general way of figuring i t out is to mimic a roller, or roll your hair as if you were putting it on a roller, and then pin it underneath with a hole in the center as if it were on a roller,
or roll it the same way, but once you get to your roots, pin it flat against your head on one side.
(Here, I wanted it to curl/ up, so I rolled up.)
That's what I mean by pinning it flat. If I know I am wearing it down and not up, I always just pin it flat to my head on one side, so it still has body. I don't like it to be super straight or flat/"sleek," just smooth.
I don't get impressions on my hair this way, and it stays bouncy and lightly curled as long as I keep it up. If I start to get too much curl in my hair or want it straighter, I may cross wrap for a night to flatten it out again.
HTH.