It basically covers how to get food, where to train, and buy armor.
Step 1: Food and where to get it
Step 2: Armor and Weapons
If you have enough money for this, go buy some armor and a weapon. When you're lvl 3 you can only wield up to iron so if you have enough money go buy either an iron longsword or scimitar. then buy yourself a shield, platebody or chainmail, helmet, and some platelegs or a plateskirt (girls).
Step 3: What to train on and where
Now all that's missing to make you a warrior is something to train on. There are tons of low level creatures to train on around RuneScape. The most common is probably a man or woman (non-player)
These are only level 2 and are found in every town or city on RuneScape. When killed they ussually drop money, so kill them if you're short. Another low-level monster is a goblin. These ugly monsters are
found near Lumbridge, and other places like that. They also come in different levels.Here are the links to all I could find; Level11 goblin, Level13 goblin, Level16 goblin, Level2 goblin (attack this 1), Level25 goblin (do not attack this if you value your life), Level5 goblin.
Now, if you are one of those boring people that don't want to lose any food advancing levels and just want to sit there, clicking one thing over and over again, this method is for you: go to Varrock north of the Ranging store and attack the dummies there. Boring.
There are also impsimps that have the annoying habit of turning up everywhere. Even though they turn up everywhere, you will always find one or two around Falador gates, and about five will be wandering around the Karamja volcano.
Step 4: Go out there and fight!
You will just turn up back in Lumbridge with 3 of your most valuable items that you had on person at the time you died. I hope this I'ble was helpful. Happy Fighting!