People experiment with dope and sh*t all the time. This is caffeine. Just try it out.
Get some No Doz 200mg pills and try taking half of one. If you're not satisfied with the effects after 15-20 minutes, try taking the other half.
You're not going to have a real understanding of any substance unless you have actual experience with taking it. No one knows how much is going to be good for you and what the ideal dose and dosing pattern would be. Everyone is different.
I take No Doz anywhere from 1-3 days a week. I usually take half of one pill, sometimes I take a whole pill. In rare times (like driving long distances) I've taken multiple pills over the course of several hours. It is definitely effective, but it also has many disadvantages.
Daily use will lead to dependence.