Hi amarpal, your efforts are commendable. In order for u to understand japuji Sahib first u must undestand the purpose of Jaa-aap. knowing your self. Taking inventory of the good, bad and the evil that resides with in our body. In order for you to fully understand the meaning of the 2nd pauri first, u must understand the meaning of the stanza, " Hukam Rajii chalna Nanak Likhia Naal" these are only six words but it will takes you several days of hard work, if u r lucky, to understand this. I will give u a hint so that your task can become easier. You have to do a lot of thinking and reach out to the vedas in order to fully understand the meaning word " Rajii" it has to do with Satva, Tatva, Rajas, Mana, Tamas, dharm. once you under stand this rest of the stanzas in this pauri will become quite clear. Japuji Sahib is written in such a way, in that its requires a lot of thinking and is dezined to turn an ordarnary mind to and extraordanary mind, only than u will understand the meanings behind the words and u can use the same mind to improve other aspects of your daily life.
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/jap-ji-sahib/314-japji-sahib-pauri-2-a.html
Reference:: Sikh Philosophy Network http://www.sikhphilosophy.net/showthread.php?t=314

Latter on in Japuji Sahib u will learn the dangers of having " Akshri Gian" only

your current understanding of all the stanzas is incorrect. It totaly lacks logic and common sense. There is nothing in all the Gurbani , so far, in my quest to know that lacked logic and common sense.

Wish U all the best- Inder Pal Singh