Where to find the pulughin and how to update them

Feature Requests
1

I want to update tinymac plugin. Where i can find the gz file to update it. Please advise as necessary

2

Which versions of software you use. OJS?

3

I am using OJS 2.4.8.2 and I want to upgrade all the plugins. I want to add more themes. Please let me know the link. Thank you