Yes your daily points are just that. They are used each day and can not be carried over to another day. Your weeklies can be used a few each day or you can save some/most/all your weeklies for extras at the weekends. The weeklies are for you to use as you like. So if you were to spread your weeklies out evenly over the week, that would be an extra 5 points each day.
In the beginning, I spread them out pretty evenly over the week, but now I tend to save more of my weeklies to use over the weekend, as I tend to need them more then! Or sometimes I use them, if I am having a meal out. There is a questions as to whether you should use your weeklies. I have always had all my daily points and my weekly points every week. I have been going for a year now and have lost over 8st so far, so I know it works. My coach always says to use all your daily and weekly points, but I know some people have different views. I am also using some of my fitpoints I earn too.
Personally I would say use all your points, if you can. Just decide when you may need some flexibility of extra points for whatever reason, or divide them equally over the week. As you lose weight, your points will reduce gradually over time. I started on 57 points a day and am currently in 35. I think when you get to 30 points a day, then after that, your weeklies will start to reduce by 7 (which averages as 1 point a day less). If you are adding extra treats for now to just use up all your points, it is easier to reduce those/cut them out over time, as your points reduce, in the future. For me, having extra treats was what helped keep me going in the early part of my journey.
Good luck with your first week!