Simply being an sjob THF you will never make anywhere even close to the amount of cash you need to make to buy arrows and new armor/weapons .. for instance .. at level 14 I blew away 20k on a new bow and 7k on 10,000 arrows .. (I can go through about 350+ arrows per PT)..
I could not get that in a million years just being a thf .. you need to farm cash .. you need to work the Auction Houses .. spend 1 day just looking at the auction .. find out what sells for a good price and is relatively easy to get and exploit the **** out of it .. when other players catch on .. move to something else .. but hopefully .. they wont ..
for instance .. I can take a trip to Windurst and run around with widescan and 1/2 hit crawlers ... crawlers drop "Crawler Calculus" and "Silk Spools" .. I give the calculus to an npc for 600 gil per 3 and the spools sell for 1,000 gil a pop on auction on my server .. thats 12k per dozen .. for running around killing level 6-8 monsters ..
If you dont have a high level character and you want to be a Ranger there are two things I suggest doing ..
1. what I have said above
and.. 2. Learn to craft arrows, its really so much cheaper..
your welcome ^-^