Bikram yoga [aka hot yoga]

Hi~~~` im planning to try out hot yoga during my xmas break.....
but im looking for some comments, suggestions or advice~~~
first, i have never taken any acutal yoga classes before, so is hot yoga the right choice?
second, i heard from my friends that hot yoga is alot more difficult than normal yoga, is this true?
third, has any LYK taken hot yoga before??? any comments?????

THANKSSSSS