Hey Mac People!
Tube Toolbox does not work on a Mac, tablet or phone.
Instead, please use: https://www.TubeAssist.com
PLEASE, PLEASE, PLEASE take the time to quickly read through these few sections.
It will save you lots of time and headaches in the future :)
We have a slightly outdated but still very relevant Getting Started Video here:
http://www.youtube.com/watch?v=efa1AP1fKbU

Getting Started Overview

The Basic 2-Step Process to Using Tube Toolbox

When it comes down to it, there are basically just 2 Steps to using Tube Toolbox.

Step 1: Gather Users

Before you can start contacting people using Tube Toolbox (sending Friend Requests, Messages, Subscriptions, Comments or Share Video), you must tell Tube Toolbox WHO to contact. Creating lists of users to send to is called Gathering Users and we provide several ways to find and gather users on YouTube that are within your target demographic.

Step 2: Contact Users

Once you have a targeted list of YouTube users (from Step 1), you can choose to send them Friend Requests, a Message, share a Video, Subscribe to their Channel, post a Comment on their Channel, etc. This part is all automated and you don't even need to be at your computer.