Q 1338

I take a Ranger Substitution Level 2, swapping out combat style for something else, meaning I don't get to choose Two-Weapon Fighting or Rapid Shot. When I reach level 6 I take a normal Ranger Level. Do I get a choice between Improved Two-Weapon Fighting and Manyshot or Two-Weapon Fighting or Rapid Shot? In other words, does the first stage of Combat Style now start at level 6 or can I skip on to the next one?