well. i am new here.. just sort of barged in, but since no one is here
today 'cept you and me, i'll try to help. I am also a novice, however.
the worst thing you can do to the cactus i think is to over water it.
Allow the soil to be come dry between waterings. even the Aloe.
During the growth months, spring and summer, when you water, give it
some fertilizer and sun, but in the winter it needs too rest, so no
fertilizer. The aloe, if it is the tender type sold in most discount
nurserys, won't want direct sun as it will burn it. i put mine out in
the summer where it will get a bit of early morning sun and open shade
the rest of the day.
probably before the next day is over, you will get some more , better
information, so keep checking.
lee h