this guide should bring you some first aid for a barbarian:
http://forums.d2jsp.org/index.php?showtopic=18377324&f=272you are offered a strength and a dexterity built.
For some general knowledge, this one should introduce you furthermore relating general matters:
http://forums.d2jsp.org/index.php?showtopic=24496799&f=74in terms of items, aim for the following:
weapon: lvl 5 axe/club/sword with 40+ enhanced effect e.g. 47ee lvl 5 axe on market for 5fg or 40ee club for 3fg.
heavy armor ( plate if possible ) with 50+ enhanced effect for more def e.g. 60ee 5ml lvl 5 plate mail for 6fg or magical iron chain mail 55ee for 1fg
charm with some stats ( dex, str ) or maxlife. some life per kill/attack would be nice. e.g. 11 str 2 critical strike ice for 1fg, 16dex wind for 3fg
should be about 5-15fg.
this setup can last till level 15, but you should upgrade weapons with such an ee amount every 5 levels.
try to get a similar ee armor at level 15 at least, you should get cheap ones easily.
same goes for the charm, go for more stats later on.
try to sell the gear you do not need any more on the market to finance new gear, sell mutables as well.
if you feel totally lost, you can get some financial aid over here if you fulfill the rqeuirements:
http://forums.d2jsp.org/index.php?showtopic=21674362&f=272you will notice that monsters get stronger throughout your climb, so you need to upgrade gear.
as well, you may play with others in the catacombs if you can not advance alone, there are many helpful players out there.
it will be hard grinding without having much fg, but if you get the knowledge about the game and keep on playing patient, you will improve

enjoy the game and merry christmas, you may contact me ort other helpers here if you have more questions.