How to prevent losing your itemsEdit
If you want to just head into the wilderness whenever you want without PKing, here is a good tip. If you want, only bring a platebody, sword, and platelegs (or skirt). This means that you will not lose your equipment because you only keep 3 items on non-skulled death. If you are PKing, plan on bringing a lot of lobsters then. Also bring a teleport to get out of tight situations.
How to avoid dieing out of wildernessEdit
What you do, simply, is you don't be brave. you run away when you a get less than a quarter of your health down (or if you are fighting a monster that does a maximum of a quarter of you health, run away when it has done 2 hits max on you. Unless you have a lot of lobsters, which will help.)
When you do die, how to prepare (Free World)Edit
When you die in a free world, and you lose you coins, there are a number of things you can do. If you have a high mining, you could go to a mining site and mine until your inventory is full, sell it (or make it into something), and repeat! If you have a high woodcutting level, cut and sell wood! If you have a high fishing level, fish and sell the fish! If you have a high cooking level along with a high fishing level, fish, cook, and sell! Its that simple!
When you do die, how to prepare (Members World)Edit
When you die in a members world, apart from what you can do in a free world, there is not much you can do. You can sit at the bank at Catherby (or wherever the flax is) saying "Flax picking job, 1k a load" or something like that. But, when you do this, what has to happen is the person who pays you has to have only the money in his/her inventory. You can play Castle Wars to get tickets to buy a shield and a sword. Other than that, there isnt much to do.