Skill training guides
There are many ways to train all skills. The fastest training methods usually require the most effort and/or money to perform; cheaper and lower-effort methods tend to be slower. What type of method the player chooses ultimately comes down to preference and what properties the player values. Some players like to make money during their training, some prefer low-effort methods regardless of the profit or experience rates, and others do not care so much as long as they get their experience as fast and efficiently as possible.
Some skills may be trained quickly by buying supplies from the Trading post, such as Cooking, Prayer, Construction, and Crafting. These are sometimes referred to as "buyable" skills. They are usually considered easy to train for normal accounts, but Ironmen must get the supplies for these skills some other way, usually by gathering them directly, buying from shops or from monster drops. For example, when training Herblore, it is easy for a normal account to simply buy thousands of herbs and ingredients, while Ironmen must collect all the ingredients themselves by Farming or killing monsters.
Setting a goal to complete all Quests/List early on is a great goal as it gives access to a lot of new content. Furthermore, completing the Achievement Diary is equally as important as you get plenty of experience rewards, perks, and unlocked content from completing them.
Training some skills can also provide passive experience in other skills. Woodcutting with an infernal axe or mining with an infernal pickaxe can also provide (depending on the method) passive Firemaking and Smithing experience, respectively.
For normal accounts, training certain skills inevitably requires spending a lot of money. Construction, Crafting, Herblore, Prayer and Smithing are usually considered as the straightest examples of "buyable" skills, as the fastest viable training methods are very expensive and the cheap alternatives are notably slower.
Some players choose to play alternative accounts to make money while training skills on the main account, allowing the player to sustain wealth whilst always using expensive methods with high experience rates. Merchanting and killing profitable monsters (such as rune dragons, Zulrah, or Kraken) are common methods of money making for this purpose, as they are relatively low effort and therefore do not require much attention.
Since skill training can be repetitive and very often exhausting, one of the best ways to do it without becoming burnt out is to do something else at the same time. Activities such as reading, watching television, listening to music or even working out while training can keep focus up and boredom levels to a minimum. It can also be good to switch training from one skill to another from time to time. Not only does it decrease monotony, but certain skills can be trained much faster and/or cheaper in conjunction with other skills.
List of guides
There is also a guide for