I find the Reports Wizard to be pretty helpful when creating reports.
1. I'm not sure what you're referring to. Can you elaborate further?
2. Under the Date Options of the Reports Wizard, click on Timescale and set the Date Interval to Week.
3. For Resource Histograms, go to the View menu > Show on Bottom > Resource Usage Profile or Activity Usage Profile depending on your needs. Change the Date Interval (under Timescale) to Month/Week. Then adjust the settings in the Resource Usage Profile Options or Activity Usage Profile Options, to display what you need.