There are literally thousands of different styles camera strap available for photography equipment and it can be a mine field for anyone trying to find the right one for them. First decide if you want your equipment at the front of you all the time and if so, how low or high it needs to be. Some photographers like their equipment high on the chest for quick hand eye operation, whilst others, like it lower, so it can be swivelled around to the back, or under the arm, whenever it isn't required. Think about the width of the camera strap, for wearing around the neck on these occasions, as it doesn't need to be too wide, but extra width evens out the load. A camera wrist strap can be quite useful for photographers who use their equipment all day long and want a bit more comfort than just the grip on the equipment to hold; it also gives additional security and peace of mind.
Next decide what material is needed for the strap. If you are going travelling somewhere hot, then additional padding will be needed for a camera neck strap, as there will be little protection for the skin if wearing thin shirts or a t-shirt. Neoprene is a great material for this, or a soft leather camera strap (although a little more expensive) makes carrying your equipment more comfortable, but they tend to be manufactured in block colours of brown or black, so have very little 'personality' of their own! If you want to stamp your personality on your equipment, then there is a huge range of nylon camera straps or material camera straps, which have fantastic patterns in a wide range of colours, some of which are extremely eye-catching.