Always start with the most simple cuts, such as those where the hair of the same length. To start with the length and then cut the small strands hair until shorten them all over the head. Be sure to leave a little slack so that in case of small flaws could align them.
There is an easier option. You can first make a model haircut in the salon, and then at home only to cut the strands so as to preserve its original appearance. But keep in mind that the rate of hair growth on different parts of the head is not the same.
If you are the owner of curly hair - then cut the hair much longer than what you want, because when hair is dry, it will be much shorter. And, consequently, very little hair will resemble the one you imagined.
In that case, if your hair is thick and tough - always clipped at one time small strands, because the risk only spoil not only hair, but the hair itself.
Whatever hairstyle you choose, always remember that at the end of it you must comb through hair. This will help determine whether you cut your hair evenly, and if not - to correct irregularities.
As for the men's haircuts - everything here is much simpler. There are special electrical machines with different attachments, with which you can easily make any hairstyle. Simply select the nozzle - and more! And if you want - you can quite dramatically change the image of a young man: take an ordinary shaving gel, apply it on your hair and gently shave off all unnecessary. It turned out pretty bold and original. The main thing that the young man was not upset ...
In addition, there are a large number of video lessons and tutorials, as well as specialized literature with examples and illustrations that will help you quite quickly become a professional in hairdressing.