Several admin settings will get you started: Configuration > Index Listing >
Show New Products on Main Page
Show Featured Products on Main Page
Show Special Products on Main Page
Show Upcoming Products on Main Page
(set all to 0)
Cofiguration > Layout Settings >
Define Breadcrumb Status (set to 2)
Categories - Always Show on Main Page (set to 0)
There are probably some others you will end up using, but these will get you started. If you don't want sideboxes on the homepage, there is a simple tweak you can make in /includes/templates/your_template/common/tpl_main_page.php. Look in the comments at the top of the file for instructions on disabling left and right columns for certain pages ($this_is_home_page is the variable to use for the homepage).
For additional info pages, there are several define pages premade (Page 2, 3 & 4) which you can add content to and rename using instructions from the tutorials. You can create as many new define pages as you want; the About Us mod from Plugins will simplify that task.