we would like a control field (kind of like a combo box) programmed which can be displayed on a SharePoint 2010 site (.aspx page) and through which users filter a stream of blog posts inside a ContentQueryWebPart (CQWP).
Here is the mockup attached for the control (it may also hover immediately above the web part or be embedded in the Web Part itself, I am open to suggestions. Also no familiarity with German is required)
An estimate (time as well as total sum) will be required for the project. Should you have other questions I'll be happy to answer them.
Please read the project first and write the word "Understood". Also write your steps and suggestions to complete the project with a short description of what you understood.