Here I go again, trying to fix everyone on the Internets!
When I see folks using "alot" instead of "a lot" I want to scream at them and yell "WHY WEREN'T YOU PAYING ATTENTION IN SCHOOL⁉"
Well... not really. But I digress.
An easy way to remember that you shouldn't use "alot" a lot, is to wonder "would I use alittle?".
If the answer is a resounding "yes!", then carry on with your nonsense.