Just reiterating what Ron has said,
"X and Y" is normally used to indicate two different things.
"X and also Y" is normally used to bestow two descriptions on the SAME person or thing.
That's one reason to use "and also". Certainly there are others.The point is that, under most circumstances, "and" is just fine. There should be some reason, normally related to immediate clarity, to append "also".
More importantly, this type of thing is tossed in there largely as a distraction.
If two forms are both acceptable"”"”and
the differences between them are quite subtle (and/or related to style, rather than to actual concerns of mechanics or meaning)"”"”then, if they appear,
their primary purpose is to pull your attention away from other, more important things. Watch out.Edit:--
Some details from mikemcgarry as well,
The phrasing "and also" is not redundant. It is used
for emphasis and clarity. Among other things, the two words are not redundant because we could not use "also" by itself in this context. We have to use "and," and "also" emphasizes something special about the conjunction.