Getting to level 70 can be a bit of a drag, if you find yourself having a hard time keeping to the game like I did, (At least until I hit 60, then 70 was where the real fun and addiction began) you can just log in and worship (invocation). You unlock the ability once you hit level 11 (can be unlocked within the first 4 hours of gameplay).
Once you unlock this ability you get these (Rewards based on your level):
-[0 wait time] First Blessing: Experience, Rough Astral Diamonds, Ardent Coin, Celestial Coin
-[15 minute wait time] Second Blessing: Experience, Rough Astral Diamonds, [Celestial Bag of Refining], Bonus Experience Points (10,000 at 25% rate)
-[30 minute wait time] Third Blessing: Experience, Rough Astral Diamonds
-[45 minute wait time] Forth Blessing: Experience, Rough Astral Diamonds, [Celestial Bag of Refining], Bonus Experience Points (10,000 at 25% rate)
-[60 minute wait time] Fifth Blessing: Experience, Rough Astral Diamonds
-[90 minute wait time] Sixth Blessing: Experience, Celestial Coin, Bonus Experience Points (10,000 at 25% rate)
If you get into a guild or start a guild you can also talk to the Cleric NPC and he hands out a daily quest based on your level. If you talk to him and do his mission (1 Dungeon) you can a massive amount of experience for your current level.
One massive time saver is to keep an eye out for a double exp event which you can see by looking at the Calendar
and look at upcoming events
for a double exp event. If you do not want to do the Cleric every day (it can be a bit tedious) at least do him during the Double event.
If you worship every day getting to 60 is easy and doesn't take too long at all. I have 5 characters and I have worshiped my way from level 11-60 on 4 out of 5 characters.
If you want to help yourself for the future I also recommend professions as well. (Unlocked at level 10). I grabbed a video from youtube that should help understanding invoking and Professions thanks to Rich from youtube.