達 (たち) Explanation?
I noticed the word 達 (たち) in the end of a few words, can someone explain what this word is used for?

Ive seen 人達, 私達, etc. (I understand these, but I dont understand 'あなたたち' )
What does 'あなたたち' mean?

Question

達 (たち) Explanation?
I noticed the word 達 (たち) in the end of a few words, can someone explain what this word is used for?

Ive seen 人達, 私達, etc. (I understand these, but I dont understand  'あなたたち' )
What does  'あなたたち' mean?

Answer

To expand on what the others said, yes it is for plural but you should remember that it does not work for all words, mostly only for human pronouns.

あなたたち would just be "you (plural)", which is not something we have in English, but exists in a lot of other languages.

Answer

hello，i am glad to answer you。 達like show 2 or more than 2things ……for example 私means me ，and 私達means we 。

Answer

You used it to say the plural. 
私たち、we
あなたたち、you (plural)

たち　is the pluralizing suffix like for people, animals :)