You can do something like this for example. You are in the right track just use what you have learned in the Code academy up to this task.
consonants = "bcdfghjklmnpqrstvxz"
original = raw_input('Enter a word: ')
if len(original) > 0 and original.isalpha():
if original.lower()[0] in 'aeiou':
print original.lower() + 'ay'
else:
keep_first_consonants=""
count = 0
for letter in original.lower():
if letter in consonants:
keep_first_consonants = keep_first_consonants + letter
count += 1
else:
break
total_characters = len(original.lower())
print original.lower()[count:total_characters] + keep_first_consonants + 'ay'
else:
print 'Accept only letters'