Training is any task that is performed to boost the player's experience in one or more skills. Activities that are not undertaken specifically for the purpose of gaining experience are not generally regarded as training (for instance, battling Zulrah to get drops of items that are rare).
One of the most convenient way to skip training and grinding for wealth is to buy osrs gold from one of the trusted gp selling website and make your life easier. This list can be found on RSComparison.
There are also many approaches to get all the skills trained. It usually takes the most energy and/or money to execute the quickest training methods; cheaper and lesser-effort approaches appear to be slower In the end, what sort of process the player prefers depends on the interests and the characteristics of the player values. Many players like to earn money when training,while many prefer low-effort strategies irrespective of the level of benefit or experience they will get, and others don't really care so much as long as they get their experience as quickly and efficiently as they can.
RSComparison and Runescape Guides
Many skills can be easily trained by buying supplies from within the Grand Exchange, such as Prayer, Crafting, Cooking, and Construction. Sometimes these are also related as "buyable" skills. For normal accounts they are usually considered easy to train, but Ironmen must in some other way obtain the supplies for these skills, usually by collecting them directly, purchasing from shops or either from monster drops.When training Herblore for example, buying thousands of herbs and ingredients is easy for a normal account, whereas Ironmen will have to collect all of the ingredients by farming or killing monsters on their own.