Making the decision to increase mind power can be a very rewarding choice. By improving your mind power, you can literally improve your life. Because the fact that everything you do comes from the way you think, increasing your mind power can have wonderful effects on your whole life. It is my belief that this is one of the most effective ways to get leverage on your life, because you are taking control of your power. There are many different ways in which you can increase your mind power, and it really depends on what specifically you are looking for in terms of mind power. You may mean mind power in terms of just improving your basic memory, and ability to think clearly, or you may be talking about your ability to focus, meditation, or even psychic ability. Whatever you are looking for, there is an answer which can help you improve your mind in this way.
If you are looking for basic mind improvement, such as improving your attention, and probably one of the best tools that you could look into for this job, is what is known as brain training games. Brain training games are a great way to effectively improve your cognitive abilities in all different areas. Apart from the fact that they are effective, the fact that they are games makes them fun, which gives you more motivation to keep up your practice and therefore reap the rewards. If you are interested in this type of increase mind power development, then I suggest you have a look at lumosity.
If you are looking further increasing your mind power when it comes to your ability to be clear minded, calm, and in a meditative state, then you may want to look into something like the Holosync CDs.
If you are more interested in psychic ability, then this is also something that I have had a bit of experience in. One of the best courses that I have ever found in terms of teaching yourself how the train your psychic abilities and increase your mind power is called the Silver Ultra mind system. For more information on that course you can click here.
As I mentioned, without knowing exactly what type of increase of mind power you are looking for, it is difficult for me to give you a specific answer. I hope that the resources I have pointed you towards are helpful in your search.