Connecting Devotees Worldwide - In Service Of Srila Prabhupada
u can read this book with a purport by srilla narayana goswami.
download it from totol bhakti.com
It is good that you are considering whether or not to read material from other Vaishnava lineages. The answer is no, that reading devotional materials produced by people outside of ISKCON is strictly forbidden by Srila Prabhupada. His Divine Grace explicitly instructed His disciples [including us] to show polite obeisances to other Vaishnavas but not to associate with them too closely whether in person or by means of their literature.
If you would like to read more about the glories of Lord Krishna, Srila Prabhupada Himself has written more than enough books to satisfy our longing for Lord Krishna's adi-lila. The KRSNA Book is a phenomenal book on Lord Hari's transcendental pastimes. The link for the book is as follows: (http://vedabase.com/en/kb)
With this link, you can read about the extensive pastimes of His Lordship in-depth and without having to leave Srila Prabhupada's spiritual lineage. PLEASE AVOID ASSOCIATION WITH NON-ISKCON DEVOTEES! Show them respect and politeness but NO MORE than that. Think about how Prabhupada would have reacted, seeing one of his disciples reading a Gaudiya Math book...Haribol and Blessings!