Very rookie question about modifying menu

[OunknownO]

I have an html skeleton(and css)... of a menu but I need to add functionality to it(this is my first prestashop project). I want to create this kind of menu http://prntscr.com/cirlz1 . static dummy html/css are added. Now my question is what do I need to modify/add so that becomes static content(for example tabs be list of categories) and opens products. I don't need the code of precise but can you at least give me few examples of code(just point me in the right direction)

[vekia]

 

 

Now my question is what do I need to modify/add so that becomes static content(for example tabs be list of categories)

everything depends on where you want to display it. if in left column i suggest to take a look on module: blockcategories 

in blockcategories.php there is a function public function dispalyLeftColumn() - this function contains feature to get the list of categories from database and pass array of categories to .tpl file. - just alter .tpl file of the module to fit your html/css skeleton