Moxie - Yes it's possible! The doorway to the Records exists at the pre-conscious level, that stage of consciousness right when we are going to sleep or waking up. A beginner's way to try to access the Records is to hold a question in our mind before going to sleep and intend to have the answer. Keep a notepad or digital recorder next to your bed in case you get the answer!
There are a variety of techniques that can help access the Records more consciously - breathing techniques to increase our energy, hypnotherapy techniques, prayer, meditation and visualization - and once you're able to access them, then all you need to do is remember the feeling of what it was like to be in them. It gets easier with practice!
Rei - It's not common to be tired afterwards. This can come from over-extending yourself energetically or from conflict (yours or theirs). Find your balance and know your energy limits.
Try spending less time in the Records but come back for more sessions and see what happens. Especially when I'm doing back to back readings, I find a certain rhythm (like dancing), which helps me work all day. If a client has a lot of conflict, it can be energetically and physically exhausting, then I'll do some chi building exercises (ie. tai chi, chi gong) or rest. Also, try doing more chi building exercises before going in.
For an easier transition - almost touch the fingertips of your left hand with your right hand with palms facing your body, and in a fluid sweeping motion, move them from the base chakra upward over the front of your body over your face. When you get to the top of your head, make an outward sweeping gesture and place the hands in front of the base chakra again. Do this several times. Inhale when you're sweeping up, exhale when you sweep outward and down.
The Records are very user-friendly. Ask to receive the information in a way that you can understand - touch, feeling, hearing, seeing, etc - and at a speed that works for you. Hope that helps!
Weena - Your intention drives the process, especially if you have no conflict about accessing them. We are all capable of accessing them (just like everyone can play a musical instrument). Staying in a very relaxed and yet aware state is the key. Once you're able to access them then you're always able to access them. Yay!