I think the study tips change with age. I know that I once insisted on having loud music roaring while I studied, but these days it drives me crazy. I much prefer to have the quiet chit-chat of the tv in the next room while I work. Too much quiet can also be a distraction IMHO.
1) I disconnect myself from the internet. I download everything I need to study and then I either go to a coffee shop where there isn't free wifi, or i just shut off the wifi on my laptop. The extra effort of turning my wifi back on usually keeps me from using the internet for mindless things.
2) If something other than the internet is distracting me, I use a quick concentration/meditation method that I have outlined in the following hub:
Try to listen to your body. I might sound stupid but for eg. I havn't drinked enough of water and felt always tired and disconcentrated then one day when I felt that way I just drunk a whole bottle and I found it is like filling up batteries. Other thing is to have a good light in the place of study to not to let you body think it is time to go to bed. There's more you can find on the net as for eg. http://how-to-concentrate.latestnewsfrom.net These tips are quite good and I use them.
Go to facebook when you are studying!! LOL!! No, I am serious!
When you get too intense, you will end up losing concentration and get stressed up over nothing. But if you study a little bit, then go facebook for like ten minutes or take a short break by walking for a while, you will do just fine! In fact, you will find the study experience more pleasant and less stressful...