Civilization has been one of the biggest revolutions made by mankind. Being civilized mainly pin points at the behavioural aspect. But then it is not just about manners and how we handle ourselves in the society or community. It also indirectly pin points at how we present ourselves amidst the crowd. How we dress says a lot about our personality to an extent and it is very important for us to be dress in a civilized manner. Dressing elegantly and appropriately is very important in both man's as well as woman's lives. And if you want to look professional, independent, mature, handsome and elegant suits are the best kind of dress you can find for yourselves.
There are two purposes for a man to wear suits. One is to look professional and handsome at the same time. Two is to dress up warmly to suit the cold climate. However, over the years the latter has become much more of a lesser importance as making of suits in fashion industry have also gone through an evolution and today you suits to fit almost any kind of climatic condition. You do have suits which can be worn for warmer climatic conditions.
Then again, you cannot wear literally any suit for any occasion. These days there are norms and codes maintained by the society when it comes to wearing suits for certain specific occasions. Generally a suit consists of a shirt, a decent trouser, a waistcoat of the same colour of that of the suit, an overcoat which is similar to the trouser colour, a tie which can be of different colours or designs, nice formal leather shoes. But then again when it comes to shirts you have different colours and styles. Mostly people tend to wear white for meetings and stuff. You have shirts with flaps along the button area which is usually worn during ballet recitals and certain other parties which demand a funky outfit. In terms of tie you have the regular one as well as the bow-tie which you can wear by knotting it around your shirt neck etc.
Tuxedos amidst all the varieties are the most famous among suits. They are usually work for casual parties, during weddings, official company parties and other meetings with clients etc. You also have black tie parties or white tie parties where wearing a black tie or the white tie is a must as a dress code respectively. If you don't you usually are not allowed inside.
When it comes to materials you have linen, silk, wool, polyester, cotton. Mostly people wear silk for certain parties to look jazzy. Linen and cotton are usually worn for work during summers. Wool and polyester suits for winters. Polyester has a flexible characteristic by which it supports wrinkle free effect. You have several colours of suits as well. All you need to do is pick the colours that suits you better and make you look good. And then you also have to pick suits based upon the dress codes maintained in the society. All the details you'll ever need are available online for your information.