Buy Bags. Buy Bags. Buy Bags. Buy Bags. Buy Bags.
No, really, buy them. Head to the auction house asap and buy yourself some bags. I didnt, thinking it was a luxury i didnt need and relied upon finding a bag on mobs. At level 19 i had my newbie pack and two 6-slot bags. Finally, i decided to buy more, found four 8-slot bags being sold for 9s each, bought em all. The difference is amazing, hunting is far less frustrating and involves a lot less destroying of items. I dont know how i lived without em now.
Other thing is Armor Kits. Now, being a leatherworker myself, i know about these and have used em since 5 minutes after training in leatherworking. But for those who dont : Use em! A medium armor kit adds 16 armor to your chest, leg, foot and hands locations (so you will need 4 kits) and you DONT need leatherworking skill to use a kit. I sell my kits for about 14s for 4 kits. So how about upgrading your armor by 64 points for a measly 14s? Bargain. I am told it doesnt even matter what armor you are upgrading, cloth leather mail or plate, but i've only used them on leather myself since thats what i wear.