I don’t have the grades for university - now what?

HereForTheCuntsOfGlow

So I’m 26 and when I was in high school, I wasn’t stupid, but I didn’t apply myself. I was actually kind of troubled and didn’t care about anything. I only graduated with a 2.7 GPA. I’m much different now. I love learning and I would love to earn a degree in psychology. However… I don’t think ANY universities will accept me with my past in HS. I have heard of starting at comm. college, earning an associates, and transferring to uni - but I don’t really know how that works? I’m just really lost and don’t have that much guidance. Any ideas?

Also, can I still take SAT/ACT ?