The shuffle tracker's cookbook is a must have if you even want to start down that road, but it's just the framework for real shuffle tracking. The finer details and how to utilize the information given are not spelled out for you in the book. Through hard work and a ridiculous amount of practice, you'll start to realize how to be effective. Also, cvshuffle software. Once you have that, you'll realize most of the games you had in mind to use tracking on, aren't trackable. You'll be lucky to find a good shuffle in your state.
So, let's say you practice shuffle tracking instead of watching tv, eating breakfast, and lunch; you buy the software, mark dozens of decks of cards, find a game, and have to free time to travel. Do it! But, the best way to use shuffle tracking is on a team, so ploppies don't get the cut or take your ace. You can do it on your own, like having a tool in your back pocket to use every once in a while, but it is very difficult to count segments and count the main game at the same time. It's a lot harder than a side count.
And if you are going to use it as a tool in your back pocket, you have to keep it sharp, because it is not something you just learn and have, you have to practice like crazy. It will get dull. The worst part is, players will bet into garbage, and blame it on dilution. A level 2 count is child's play compared to shuffle tracking.
The question is how much work are you willing to put in? Because if you slack off on training, you will likely lose money.
HiLo is great. Get the money on the table, and have a conversation.