One question, guys...

When should I use too, also or as well?

They all have similar meanings, however, also is a bit different and shouldn't be used at the end of a sentence. This is a bit hard to explain haha. Okay, for example, if somebody said "I play basketball" and you do as well, you could say "I play basketball, too" or "I play basketball as well". "I play basketball also" is grammatically incorrect. Also should be used when you are adding something to a conversation. For example, "I play basketball. I also play softball." 

I hope this makes a little sense (:

~Bintu