I am looking for good set of stretch exercise book to have with me all the time. Finding the best position and place makes it hard to follow.

Perhaps it would work for you to have a stretches book located on your device? For example, My Fabulous app is on my phone, which I have with me all the time. Using Amazon's free Kindle app, an electronic Kindle version of a book of stretches could be downloaded and read from your phone, available whenever you want it! I did see there are several free Kindle books regarding stretches on Amazon available for download. Hope that helps!