For me the best way to study is to be in a comfterble position. Mine is propped up in bed with my knees under pillows to help support my back. I'm laying down with my back at a 45* angle btw. I have my books in front of me and I turn off all the TVs and radios. No distractions. I study and read until I get a little sleepy. I take a small 15-30 min nap. This is a good thing. While you are resting or sleeping your brain is processing all the info you just took in. If I felt anxiety or stressed a small dose of Xanax kicked the anxiety away and I could focus remember what I read and could process the material.
The max you can study is 2 hrs at time and retain info. Take breaks and keep hydrated and eat healthy foods.
This is the best advice I can give you to study with out losing the the stuff you just studied.
Right on, I took all the legal ADD/ADHD meds from Strattera to Aderall and used Old School Amps (Pemoline, Amphepramone from Brazil years before it became popular as a RC, I used Aminptine with Amphetamines and Coke, Ammineptine was only legal in Switzerland and uruguay when I got it in the late 90s when I was about to enter College life) and after using 10% of your head and 90% of your butt and be rested and comfortable like Coraline said (my grandfather was a Mathemitican, a pretty respected one, and when I studied with him we always took breaks to do whatever we wanted (napping or playing video games, I was like 12) for half an hour, and well he always cited quotes and studies about the elasticity of the brain and how you retain the contents way better if after learning them you let your subconscious soak in them....
Well back to drugs, I had success with Mexican Ardafinil I found at my cousin's once, was way better than the brand name Modafinil I had used in the past, which was good, but it was to study things I already sorta knew and was interested on.... On the other hand amineptine is/was an atypical tryciclic antidepressant that is a Selective Dopamine Reuptake Inhibtor, so basically the amp/coke last waaaaayyy longer and you get a way much more dopaminergic effect, perfect for studying things you thought you'd never will!!
Well it was a damn rarity when I got it back in 99, but there must be something similar in the RC scene, it's not good at all for women though it cause some Utero/Fertilty problems IIRC and the medical community hated it...it was a rarity from a really special and well versed pharmacist senior friend from when I started med school, he took me under his wing whilst e was there and it was amazing...I studied on everything and it a lll depends o how you are feeling, how you slept/ate, etc....sometimes Venlafaxine and Methylphenidate were way better than adder all and viceversa.....Amphepramone was good for sex but sucked for studying, I haven't tried RC substituted cathinones, and really don't think they'd help as a study aid, way lees PV's...Doctors here in the 60s and 70s took amphetamine sulphate like there's was no tomorrow at Uni...and manynof them have high positions in anti drug organisms now, lol, I know first hand cause many of those docs told me of the days where they took amphetamines and coffee to study for 3days straight....nowadays the new generation uses cocaine which is a terrible study aid unless it's great quality and you have loads of strength and self control....even worse med school students in their last years doing internships at public hospitals here be at the ERs they have to do 36hours+ shifts sometimes so they do loads of coke and benzos to come down and go and work that way....
I used to extract and recrystalyze adder all (d-amp) and ritalin (methylphenidate) with ethanol and a heat lamp, sometimes other solvents were used but it was really simple and the extracted stuff is so much lighter/better for studying, but you need a 000 accurate scale or it's easy to do a huge ass line... As far as the actual RC scene goes I had MDAI, 5-Meo-DALT, DOB (whig cause confusion but could be used to absorb knowledge) and 25i and 25CNBOMe....had 25i once sold as LSD and made me toss the dealer....but anyways I have this friend who's really into experimenting this new RCs with me and since with a short trip we can get Methylphenidate from shady Farmacias (think a safer Tijuana) he really wanted 4-fa after a lot of reading, but I'm gonna order some 2-fma 2-fa when I find it hope the vendor also stocks 4-fa and we'll kill two birds with one stone, the sources I use don't stock it...and I'm very leary of using new sources and SoS reports...before I had a caffeine OD (drank about 80oz of coffee at a Dunkin' Donuts at an airport after chatting up the girl that worked there for 8hours instead of sleeping waiting to connect flights) one of the worse experiences of my life, worse than tramadol seizures, and in a way than H ODs cuz you don't remember till you're back alive...caffeine OD at/after a packed flight was hell, but yeah it was a great study aid!!!
Now I have IBS so I have to take loads of lope (I used to be addicted to opies so I always had opies on me when i did stimulants) so can't drink coffee....I'm gonna try 4-fa for partying, I don't study anymore but I'm always doing research/learning will see how these new stimulants affect that....and if you can get Amineptine and take coke/amps 45mins after...wow, you can do anything....but once again it's all mental, if you feel that you need a study aid or otherwise you won't be able to study you're doing it wrong, and if you really have an attention deficit search medical help...damn if I had to chose from my vendors I would go with Ethylphenidate, unit 1gram is a fucking lot, enough for about 2 semesters for me, so be careful....really moderate doses of high quality amp/coke help, but if you can stomach a couple of double espressos every couple of hours that had me working like there was no tomorrow!!!
Basically you blot loads of great answers, it feels great to be again here on bluelight! Hope your studying seshs go great!