No problem, ask all the questions you like
XP is given from the actions you do, for example fight and offensive magic xp from attacking in combat, defensive magic xp from healing someone in combat or using a defensive spell like fear in combat. Crafting xp is earned for everything you make, harvesting xp for everytime you dig up some materials. It breaks down more then that as your skills get higher and the skill lines break up, for example when fight breaks into melee and ranged you need to fight with the right type of weapon to get melee or ranged xp. That happens for magic, crafting and harvesting too.
If you click on a the system info tab in the chat area it lists the xp you get as you get it.
Edit: *waves Jamela*