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 hell 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 ^-^