I'm in my first semester, so I can only answer with limited experience
1) So far I think the hardest is Respiratory, but I just started it and that's probably why. It seems daunting. Like I said I'm in Fundamentals, so everything is pretty basic at this point and I shouldn't be complaining at all.
2) At first I studied every single day. Then I studied a few times a week. Now I study the night before. Keep getting A's, so I'm alright, but I will definitely have to pick it up next semester.
3) My scrubs were through my school too. They are Landau. I did get my bottoms at Walmart though, and I like them but they will shrink in the washer. I have heard that Grey's Anatomy brand is really comfy, if you have a choice. I am using New Balance white shoes now, and I don't have any complaints, but I do feel like if I used them every day when I work they would be bad. So I'm thinking of trying Danskos next semester or when I graduate.
4) Oh clinicals. I was absolutely terrified at first. You do, as the above poster said, have to take it into your own hands. I have to say I've been stuck with some pretty horrible nurses. But I tried to show them interest and what I knew, so overall it was an amazing experience so far. You have to make it your own. Go in confident, it is so important, and don't let your patients know you are scared out of your mind becasue then they will be too.
5) My program tries to fit in all different types of learning, like visual and hands-on, as well as lectures, but it can get frusturating when they switch all the time. You get used to one and then they turn it around. But overall its been pretty great, just have to ge used to critical thinking...