Buy a decent computer, if you don't have one. You don't need the highest processing speeds, but a fast computer will help you make beats. The computer should also have enough storage space for storing your completed beats and incomplete projects.
Find beat-making software. You can purchase and download software online. However, using an online beat-maker is the best option for a novice. There are many versions of beat-makers online that are free or charge only a one-time fee. The fees are worth it in terms of the sound output quality, ease of use and support.
In your software, you will have access to thousands of beats. Online beat-makers will be regularly updated with new, cool beats, whereas with a downloadable type, you may have to wait for a newer version to get updated. Online versions will also give you access to information and tips on how to make your own music, as well as support from other users of the software and support staff. This enhances your learning curve, so that you'll be making your own beats like a pro in no time.
Study the art of beat-making. No matter your drive and dedication, if you don't have the knowledge, making your own beats will prove difficult. Learn the basics of music theory (especially for the type for which you want to create beats) and of using beat-making software. Some of this information will be available with the software you use. Remember that beat-making is a learning process and many great producers have taken years to perfect the skill. The best way to learn is to create and revise your beats.
Every genre of music has a unique beat type. Know in which genre you want to work. This will guide you on the type of samples you will use when creating your beats on the computer.
Get a mentor. Having a mentor is one of the best ways to learn. Pick out a professional producer and use his beats as a guide to your beat production. Just don't make exact copies of the beats, as this is copyright infringement and will land you in trouble. Once you learn from a pro, create your own unique style.
Give yourself time to perfect your beat-making skills. Don't expect to be a pro overnight. Set goals you want to achieve along the way and ensure that you achieve them before setting higher targets. Once you have learned to make your own beats, you can compile a demo CD and make it available it to the world. Who knows---you might join the legends of music production one day.