I was guided to the library where I was told the rules and told to read up on some basic knowledge.
There were two stacks of books as high as me placed beside a desk. After I was left alone, I absorbed the books into my hands and Great Sage made a copy of them. I spat out the books and placed them in their respective places before doing the same with a shelf of books near one of the walls.
I sat down on at desk and closed my eyes, as I went into my consciousness, where I could see a blue orb pulsating and analysing and absorbing the celestial body. It was getting the process done quite quickly now, about 25% remaining. It seems the stronger body and skill allowed for a faster absorption rate.
Great Sage complied the books collected and placed them in front of me, where I began to read them up.
I was in the mindscape for around three days but in the real world, only three hours had passed. To the outside world I was meditating, while I analysed all the information by myself without the help of Great Sage.
Thus began my new routine, I would enter semi
Progress was good. I internalised almost all the books in the library in about 3 months, allowing enough practical experience in the arts with the Ancient One, and I found out another cheat.
I could absorb and analyse the abilities of artifacts and replicate them, similar to those of the creatures I absorbed. One notable example being, the Sling Ring. By replicating its abilities, I was now able to open a portal with just my mind, and without actually have the sling ring on hand. The only draw back of the ability was that I could only go to the places I had been to before. And there weren't a lot of those.
This grind lasted for 4 months, before finally the assimilation of the celestial was done. I could control all of its limited powers without worrying the Ancient One. Limited I say because it was just a piece of the whole. After the assimilation, I felt powerful, just a bit above the Ancient One currently in terms of power. I still lose out to her in combat and experience.
Since the assimilation was done, most of my work at Kamar-Taj was also done, only one thing remained.
The Eye of Agamotto.