Many, like myself, learn to access the Akashic Records via a dedicated training program.  There are many options available.  Cost is a factor to be aware of.  You get what you pay for.  My training took about one year.  This included guidance, practice sessions with fellow students, then friends and family.  It is a skill to be learned, so you may take to the work easily, or it may require more time and focus.  No matter where you are, intention is a key factor along with practice, practice, practice.