How can I find out the best exp/hr methods, efficient levelling methods etc?

Hello again,

I have had some questions lately when it comes to certain skills. For example when I look at crafting, is there a resource I can look at that can indicate what a strong levelling method is, such as cutting gems for crafting or making pottery or jewelry etc?

I try to search on google or sometimes youtube first but the resources I find are usually around a year old and I am never sure if they are still current.

When I click on my skill, is it safe to assume that the most current thing I can do yields the best experience?

Sorry if this has been asked a million times