What does that mean exactly? Do you already go to a gym? If you do, then random additional workouts just because you have nervous energy are a bad idea. That's the implication from your post...
Avoid it unless you're buying it used for a few bucks. Weider is department store quality at best. Search the forum, Weider has been talked about extensively.
Your description makes it sound like the bar would rest on the uprights on the outside of its collars, i.e. where you slide the plates on. If that's the case then you better consider a different...
Are you completely new to lifting? Dips are hard for beginners. Do you have any other equipment? As you get stronger from doing other chest work you'll eventually be strong enough to do dips. The...