First Job Tips

1. Melee weapons are best up to level 18/20, and then switch to a level 18 crossbow or level 20 bow. Funded characters won’t need to do this.
2. Always keep a melee weapon handy to return to town with in case of an emergency, when out of arrows.
3. For unfunded archers, it is best to do Critical Shot first, and then Double Shot. Critical shot activates with all bow attacks, and costs no MP. Double Shot, at low levels, can be quite a drain on funds due to MP costs and the consumption of twice as many arrows.
4. For unfunded characters to build up money, and for funded ones to add to their supply, once reaching level 21, consider trying out Kerning Party Quest. It can reward scrolls, which will be a great aid when sold for large amounts of mesos.
5. It is much cheaper to create arrows in Henesys, using 1 processed wood and 1 stiff feather. Talk to Vicious (found in Henesys Market left of the potion and weapons shop) when 1 stiff feather and either 10 branches or 5 firewood has been collected. He can then turn the branches or firewood into processed wood. Pi from Ludibrium and Vogen from El Nath can create arrows using the same materials as Vicious. Additionally, they can create bronze and steel arrows. Bronze Arrows require 1 Bronze Plate (refine 10 Bronze Ore through Mr. Thunder, Chris, or various others), 10 Stiff Feathers, and 3 Processed Wood. Steel Arrows, on the other hand, require 1 Steel Plate, 15 Soft Feathers, and 5 Processed Wood. In Zipangu, particularly Showa Town, Red arrows which add 4 attack are sold. Soul arrow will be available once you make the 2nd job advancement, so rest be assured, you will not have to keep this up for long.
http://strategywiki.org/wiki/MapleStory/Bowman_Guide