My new puzzle book "Is Your Move Safe?", which was already out as an e-book, is now out in hard-copy (paperback). You can get it thru the publisher, Mongoose Press (www.mongoosepress.com) or order it thru Amazon: http://www.amazon.com/s/ref=nb_sb_ss_c_0_13?url=search-alias%3Dstripbooks&field-keywords=is+your+move+safe&sprefix=Is+your+move+%2Caps%2C133
Although the hard copy won't be available for a couple of months, my new book "Is Your Move Safe?" is already available in e-book format via the Forward Chess app! Just click on the "Store" button on the bottom of the first page in the app and then it's either the third featured book on the top-right or you can click on "Mongoose Press" :)
Dan Heisman is a USCF Master, full-time instructor, and author of 12 chess books and an extensive Youtube Channel.