I want to find the cannon text on learning the jhanas. Is there a pdf or something in english i can download? Any help would be appreciated
In advance, the whole tipitaka is about jhāna, include sīla&vinaya.
For more focusing, see paṭisambhidāmagga.
For the summary, see Path of Purification (Visuddhimagga).
For more focusing, except 1st and 2nd chapter of Visuddhimagga, then all chapters, after that, is about jhāna, ārammaṇūpanijjhāna&lakkhaṇūpanijjhāna.
How to reach jhana is explained in SN 48.10, in the last part about concentration.
Since jhana is a state of non-thinking, how can it be reached by reading, thinking, planning & wanting?
There is the case where a monk, a disciple of the noble ones, making it his object to let go (vossagga), attains concentration, attains singleness of mind.