Anabond is a company in India that makes sealant and threadlocker compounds.
So, depending on where they tell you to put it, you could substitute RTV or Blue Loctite.
RTV to seal like a gasket, and blue Loctite for thread locking.
The alternator definitely has to come out, and the sprocket behind it.
I didn't need any special tools, but I was just taking it out, not putting it back together.
I think you can do it all with normal hand tools.
It should be pretty self-evident as far as how to get it apart.
Be sure to clean any metal particles off the alternator, especially in the gap.
You have to set the alternator gap correctly when you put it back together.
There's a gauge for this, but some people just use a piece of plastic of about the right thickness, like from a milk jug or peanut butter container. It has to be a non-magnetic material.
Ideas about the oil vary, but what I've heard is that Dexron ATF with an over-fill is the most recommended.