That depends on the job. I definitely agree with @bodangles that you shouldn’t take on a job for the first semester or two while you get acclimated to college unless you really, really need it. Since you say you have all the expenses covered, I’d say don’t bother with a job. Most jobs aren’t actually going to be much of boon to your resume anyway. The jobs that would look good are things like undergraduate research. They usually don’t pay a ton, but they pay some and it will be actual relevant experience for your resume.
That’s a good plan. Even if you don’t get an internship this time around, you will know what to expect next time when you have a better shot. Best case scenario: you get one this time anyway.
That is going to vary by company. Some companies are going to have a fairly strict policy against hiring freshmen/rising sophomores, and for them, you are pretty much out of luck. For the rest, they are going to know you won’t really have experience so they are going to want good grades (so far), some enthusiasm on your part, and some indication that you have actually researched a little about that company and what they do before showing that enthusiasm.