Relationship with Siksa Gurus and Diksha Guru- From CC Adi Chapter 1

Various points from srila Prabhupada's purports to the verses form the first chapter:

CC Adi 1.35

1. The secret is that one must submissively listen to those who know perfectly the science of God, and one must begin the mode of service regulated by the preceptor. 
2. A devotee already attracted by the name, form, qualities, etc., of the Supreme Lord may be directed to his specific manner of devotional service; he need not waste time in approaching the Lord through logic.
3.  The expert spiritual master knows well how to engage his disciple’s energy in the transcendental loving service of the Lord, and thus he engages a devotee in a specific devotional service according to his special tendency. 
4. A devotee must have only one initiating spiritual master because in the scriptures acceptance of more than one is always forbidden. There is no limit, however, to the number of instructing spiritual masters one may accept. 
5. One should always remember that a person who is reluctant to accept a spiritual master and be initiated is sure to be baffled in his endeavor to go back to Godhead.
6. The service of the spiritual master is essential. If there is no chance to serve the spiritual master directly, a devotee should serve him by remembering his instructions. There is no difference between the spiritual master’s instructions and the spiritual master himself. In his absence, therefore, his words of direction should be the pride of the disciple.
7. If one thinks that he is above consulting anyone else, including a spiritual master, he is at once an offender at the lotus feet of the Lord. Such an offender can never go back to Godhead. 
8. It is imperative that a serious person accept a bonafide spiritual master in terms of the śāstric injunctions. Śrī Jīva Gosvāmī advises that one not accept a spiritual master in terms of hereditary or customary social and ecclesiastical conventions. One should simply try to find a genuinely qualified spiritual master for actual advancement in spiritual understanding.

CC Adi 1.44:
Every living entity is essentially a servant of the Supreme Personality of Godhead, and the spiritual master is also His servant. Still, the spiritual master is a direct manifestation of the Lord. With this conviction, a disciple can advance in Kṛṣṇa consciousness. The spiritual master is nondifferent from Kṛṣṇa because he is a manifestation of Kṛṣṇa.
The spiritual master’s eternal occupation is to expand the service of the Lord by training disciples in a service attitude.

CC Adi 1.45:
The relationship of a disciple with his spiritual master is as good as his relationship with the Supreme Lord. A spiritual master always represents himself as the humblest servitor of the Personality of Godhead, but the disciple must look upon him as the manifested representation of Godhead.

The proper method of worshipping Lord Caitanya

CC Adi 1.34

vande gurūn īśa-bhaktān īśam īśāvatārakān
tat-prakāśāṁś ca tac-chaktīḥ kṛṣṇa-caitanya-saṁjñakam

I offer my respectful obeisances unto the spiritual masters, the devotees of the Lord, the Lord’s incarnations, His plenary portions, His energies and the primeval Lord Himself, Śrī Kṛṣṇa Caitanya.

Krsna Das Kaviraj Goswami begins his writing of the Sri Caitanya Caritamrita by offering obeisances to the six principles of the absolute Truth.

1. Gurun:
1. Gurūn is plural in number because anyone who gives spiritual instructions based on the revealed scriptures is accepted as a spiritual master. Although others give help in showing the way to beginners, the guru who first initiates one with the mahā-mantra is to be known as the initiator, and the saints who give instructions for progressive advancement in Kṛṣṇa consciousness are called instructing spiritual masters. The initiating and instructing spiritual masters are equal and identical manifestations of Kṛṣṇa, although they have different dealings. Their function is to guide the conditioned souls back home, back to Godhead. Therefore Kṛṣṇadāsa Kavirāja Gosvāmī accepted Nityānanda Prabhu and the six Gosvāmīs in the category of guru.
2. Isa Bhaktan
1. refers to the devotees of the Lord like Śrī Śrīvāsa and all other such followers, who are the energy of the Lord and are qualitatively nondifferent from Him 
2. CC Adi 1.38:"There are innumerable devotees of the Lord, of whom Śrīvāsa Ṭhākura is the foremost. I offer my respectful obeisances thousands of times unto their lotus feet. "
3. CC Adi 1.43 Purport:There are many unalloyed devotees of the Supreme Personality of Godhead, all of whom are considered associates surrounding the Lord. Kṛṣṇa should be worshiped with His devotees. 
3. Isavatarakan
1. refers to ācāryas like Advaita Prabhu, who is an avatāra of the Lord. 
4. Tat- Prakasams
1. indicates the direct manifestation of the Supreme Personality of Godhead, Nityānanda Prabhu, and the initiating spiritual master.
5. Tac- chaktih
1. refers to the spiritual energies (śaktis) of Śrī Caitanya Mahāprabhu. Gadādhara, Dāmodara and Jagadānanda belong to this category of internal energy.

The six principles are differently manifested but all equally worship-able. Kṛṣṇadāsa Kavirāja begins by offering his obeisances unto them to teach us the method of worshiping Lord Caitanya. 
CC Adi 1.43 Purport: The diverse principles are therefore the eternal paraphernalia through which the Absolute Truth can be approached.