This view will show you how many XP you have in the group (on top and this is overall) and for your rank (how many until the next level up).

This view will also show the quests that you have started and are "in progress" on as well as the different badges and achievements you have earned.  

Quest XP is listed on the quest page under the XP column, as soon as you complete the quest you will automatically get those XP.  If you go above and beyond the call of duty and earn an award, you could get additional XP.  You can view each individual award by clicking them.