This is another character class who's special abilities use the dX dice step system I'll be covering in a future post. The notation +1 dice means the size of the dice being rolled goes up 1 step rather than rolling another dice of that type.
Cowboy, Explorer, Hunter
Hit Dice: d6
Armor: Light Armor only while using Ranger class abilities
Weapons: Roll up to d10 damage for weapons
Find/Follow Tracks, Wilderness Survival: d8 (+1 dice at Levels 3,5)
Hear Noises, Hide: d6 (d10 for Hiding in Wilderness)
Rugged: Gain an extra d6 hit points at 1st level; +1 dice to CON checks for Heat
While a Western character like "The Man With No Name" from For A Fistful of Dollars (1964) might be well represented by the Fighting Man class, a Ranger would be a better choice to represent someone like The Lone Ranger, the (admittedly earlier) Daniel Boone, or an Apache Warrior with more lots of wilderness skills.
If you just want a character wearing lots of leather fringe instead of shiny silver spurs, well then the Ranger might be a good choice too.