Why should I use Hold'em Trainer?

How do I use Hold'em Trainer effectively?

When might it be useful to upgrade to a paid subscription?

I am new to poker, is Hold'em Trainer for me?

What games and blind structures are supported by Hold'em Trainer?

Setting up ranges seems difficult and time consuming, is there a faster way?

What is the purpose of linking ranges via the predecessor relation?

How am I supposed to train with the random number generator?

If we cannot play with a random number generator in live games, why train with one?

How are the points earned after a training session calculated?