The lumber you pictured is rough sawn hemlock and it's probably green. This is not something you can make furniture from. it will shrink, twist and warp like you can't believe. Many of the black knots will work loose, some will fall out. The table you linked is about 3" thick, the lumber you linked is only 2". The extra thickness adds stability to that construction. With that design and that lumber, you are way behind the eight ball before starting. I would start looking for some 3" pine that is reasonably dry if you want to proceed and get that look. There is quite a lot to making that table but proper lumber selection is the first step and you need to know what to look for and how to look at each board.