Thoughts about the hair

Hmm.. I don't get my hair. Sometimes it's straight, sometimes it does this:

I really like the fact that my hair is starting to grow out (finally!) and I c an't wait to have longer hair. I just wish I was more satisfied with my natural colour, which is dark blonde/"leverpostej". Even just getting streaks seems to ruin my hair even more. Sigh.

But with that said, you're welcome to come with tips to fix my slightly wrangled hair? Help is completely appreciated! :)