If you want to have a <imp>visual introduction<r> to see what <item>Actually Additions<r> has to offer, you can watch this really awesome video by a friend of mine, <item>Booty Toast<r> (yes, weird name, I know).
<n>His video covers most of the main stuff the mod has to offer, however it is <imp>a bit outdated<r> and doesn't cover everything. It's still a <imp>great introduction to the mod<r> though.
There is also the second option, a <imp>playlist<r> consisting of a <imp>spotlight<r> by <item>Direwolf20<r>. It is a bit more recent than the other video, however, it is <imp>substantially longer<r> and provides a more detailed overview. So you have the choice: The quicker introduction
on the left or the longer, more in-depth introduction down below.