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Bismillahirrahmanirraheem
Some info about Jibra'eel (AS)

Modes of descent
This sacred sequence of Wahy (revelation) and Risalah (prophethood) came to an end with the last of the prophets, Muhammad al-Mustafa SAW. Nevermore, shall Wahy descend upon any man, nor there is need for it. Wahy used to come to the Holy Prophet SAW in several forms and modes. In a hadith from sahih al-Bukhari, Sayyidah 'A'ishah RA says that Sayyidna Harith ibn Hisham RA once asked the Holy Prophet SAW as to how did Wahy come to him. The Holy Prophet SAW said that 'there are times when I hear something like the chiming of bells and this mode of Wahy is the hardest on me. After that, when this chime-sequence ends, that which has been said by the sound seems to have been committed to my memory. And there are times when the angel appears before me in the shape of a man.' (sahih al –Bukhari 2/1)

As regards the likening of the sound of Waby to the sound of bells in the hadi th cited above, Shaykh Muhyyal- in ibn a l - arabhi as explained it by saying that, in the first place, the sound of Wahy is continuous like the sound of a bell which does not break off in between; and in the second place, when the bell rings continuously, it generally becomes difficult for the listener to determine the direction of its sound because its sound seems to be coming froni all directions. And the Divine Word too carries with it the distinction that it has no one single direction, in fact, the sound gives the impression of being heard from all directions. A correct realization of this phenomenon is just not possible without auditory experience, however, in order to bring this happening closer to common comprehension, the Holy Prophet SAW has simply likened it to the sound of bells. (Fayd a l - Ba r i , 19,20/1).

With the descent of Wahy in this mode, the Holy Prophet SAW came under very heavy strain. Sayyidah 'A'ishah RA says towards the end of this very hadith that she had seen the coming of Wahy to him during days of extreme winter. When the progression of Wahy ceased, his blessed forehead would have already become dripping-wet inspite of the chilly weather. In yet another narration, Sayyidah 'A'ishah RA relates: When Wahy came to him, his breath would seem to stop, the radiant face would change -- turning pale like the branch of a date palm, the front teeth would shiver from cold and he
would perspire so much that its drops would roll like pearls. ( Al - i t q a n, 1/46)

On occasions, so much intensity would be generated in this state of Wahy that the animal he would be riding at that time would sit down, wilting under his weight. Once, when he was resting his blessed head on the lap of Sayyidnii Zayd ibn Thabit RA, there started the descent of Waby in that very posture. This released so much weight on Sayyidna Zayd's thigh that it seemed to break. (Zad a l –ma’ad ,1 /18,19)
There were times when a low-volumed sound of this Wahy was sensed by others as well. Sayyidna 'Umar RA says: When Wahy came to him, a sound somewhat similar to the buzzing of honey-bees could be heard close to his most bright face. (Tabwib Musnad Ahmad, Kitab al-Sirah al-Nabaviyah, 20/212)

Under the second mode of Wahy, an angel would come to him in some human form and deliver Allah's message. Generally, on such occasions, Sayyidna Jibra’eel (AS) used to come to him in the form of Sayyidna Dihyah al-Kalbi (RA). Certainly, at other times, he has come in other forms as well. In any case, this mode of the coming of Wahy when it was brought by Sayyidna Jibra’eel (AS) appearing in human form, was the easiest on the Holy Prophet SAW . ( Al – itqan, 1/46)

The third mode of the coming of Wahy used to be that Sayyidna Jibra’eel (AS) would appear as he was, without having taken on the shape of a man. But this has happened only thrice in his entire life-time. First of all, it was when the Holy Prophet SAW had himself wished to see him in his real form and shape. The second time, it was in the Mi'raj (the Ascent to Heaven), and the third time it was at Ajyad in Makkah al-Mukarramah during the very early days of prophethood. The first two happenings stand proved authentically, however, the last one suffers from weak chains of authority and is therefore.doubtful. (Fath al -Ba ri, 1/18,9)

The fourth mode is distinguished by a direct, non-intermediary, two-way conversation with Allah Almighty. This honour was bestowed upon the Holy Prophet SAW only once, that is, in Mi'raj, while awake. In addition to that, once it was in a dream as well that he was in a conversing situation with Allah Almighty.

Under the fifth mode of Wahy, it so happened that Sayyidna Jibra’eel (AS), without appearing physically In any form whatsoever, let some words of the message fall into his heart. This is technically known as nafth fi al-rau': blowing into the heart) (Ibid).
Maariful Quran, Volume 1, pp:4-6.
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As in sahih al Bukhari, Sayyidah 'A'ishah RA while relating its background has said that the very first beginning of revelations to the Holy Prophet SAW actually was through true dreams. Following that, came his zeal to worship in seclusion. During this period, he would spend night after night in the Cave of Hira' and stay in the state of I'tikaf devoted to his 'ibadah (worship) when one day, right there in that cave, there came an angel from Allah Almighty and the very first thing he said was (lqra': 'Read). The Holy Prophet SAW said: :' I am unable to read.' After that, relating the event himself, he said that 'the angel, hearing this answer of mine, caught hold of me and embraced me with such force that I had to go through unbearable strain.' Then he released me and said: 'Read. I said: 'I am unable to read.' Thereupon, he seized me the third time, gave a hard embrace and then released me. After that he said:
Recite with the Name of your Lord who created, created Man out of a blood-clot. Recite and Your Lord is Most Generous who taught by the Pen, taught Man what he did not know. (96:l-3)

These were the first verses to be revealed to him. Thereafter, the coming of Wahy stayed discontinued for three years. This period is known as the period of fatrah, that is, the period when Wahy was discontinued for a short interval of time. Then, it was after three years that the same angel who had visited him in the Cave of Hira' became visible to him between the heaven and the earth. He read to him the verses of Strah al-Muddaththir. Thereafter, the sequence of Wahy was reactivated.
Maariful Quran, Volume 1, pp:7-8.
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You can search by yourself from some tafsir like one here
http://www.islamibayanaat.com/EMQ.htm
Wassalam