When you first start out, you would like to OSRS gold fight everything that is thrown at you. The ideal place to begin off would be at Frogs south of Lumbridge castle, Goblins on the east or Cow farm a little further to the north-east. If you're new at the game, and you need money to purchase your first Ranged equipment, you can buy some cow hides to bank them to sell on the Grand Exchange for a little gain.
You can access them by commuting to Zeah. It's as easy as calling Veos within Port Sarim. After that , you can run along the beach south until you come across Sand Crabs. The process of leveling them is simple because of their low defence statistics and high health pool. Be sure to have the best available armour to your level, and keep an inventory full of food since they can hit from time to time.
After you've completed Bone Voyage quest you can move on to Fossil Island to fight Ammonite Crabs. These are more powerful than their Sand cousins because they have extra 40HP. They can afk little bit longer while fighting them , compared to previous creatures. If you do not meet the criteria for Bone Voyage or just don't want to take on the task, you can kill Sand, Rock or Moss Crabs for however long you'd like to. They will give decent rates of experience at all levels.
If you have done the Horror of the Deep quest you've also gained access to Dagannoth cave. You are able to put a caisson there and then begin to take out Dagannoths using Rune Crossbow and Broad Bolts. Bring along Prayer Potions as well as Ranging Potions along with the finest equipment you can put on and runes to aid in Bones to peaches spell.
As those monsters are both melee and ranged, you have to alter your prayers in line with. They might hurt a little but you'll be able to restore your health using the fruits you've produced. This is a fantastic but expensive method and in the event that you are not able to pay for it, simply go back to buy RS gold taking care of crabs.