Naming substituted branched alkanes with different projections
You are right about the first one, it's called 2,3-dimethoxy-4-methylpentane. The $\ce{-OCH3}$ group is called methoxy. The second compound is a 
newman projection
. It is basically the view that you will see when you are looking down the $\ce{C-C}$ bond axis. The second one should be called 2,3-difluoro-2,3-dimethylbutane. 

Here's what it looks like (http://www.chemspider.com/Chemical-Structure.57499056.html?rid=29f2de9b-b762-46d4-a2ca-7452b8a5d6b6). In the newman projection you are looking down the the C2-C3 axis, and the arms show the substituents bonded to them.