Second this. Pretty easy material but a LOT of material. I didn't study with people either mostly because I was a commuter student. I distinctly remember having upwards of 100-200 notecards for each of the tests.

Huxtable for social is super easy. I never studied anything in that class - just ready the chapters and summary of the chapters right before going in for the tests - made an A. It's pretty simple. 18 hours was manageable - I took 18 hours of NSC courses pretty consistently, but I don't recommend it if you're working full time because come exam time it can be a little rough.

I didn't have intro to psych at UTD as I was a transfer but I did have Sasson for RD&A and as long as you participate in the class and get to where he knows you - you'll get a lot out of it and do well. Agree, he can be sassy. Feel free to DM me if you have any questions about psych or neuro courses! I ended with BS in both neuroscience and psych and worked in a research lab for 4+ years so I got to know the faculty pretty well.