It's ok there is no jump button and it feels a little unresponsive when you try casting spells, also all you need to do is create an account on the website to enter the CB.
I was disappointed at how much I had to wait for mana to restore while playing a mage. It was a bit ridiculous. Plus you can't use mana potions in battle. :|
erm i found the cbt so far quite fun as for your mana problems i havent had any potions r easy and quick to use the only problems i have is the pvp is very one sided atm trojans always seem to win as only 3-4 greeks turn up to die ? very boring as for quests yep didnt expect much from them especially when u get asked to go to a certain zone and the zone is bugged like amazon keeps doing nothing fights back or even dies ? weird bug indeed apart from that im looking forward to the chariots etc they look interesting