Although not too difficult to learn, glacier trekking is a technical sport. In order to do it safely and properly you may want to familiarize yourself with the standard precautions of alpine sports. Train yourself in ice axe use; make sure you know how to do self-arrest. Many of the glaciers here do not require crampon use, just an axe, so please be safe and don't head out to ascend a glacier without knowing what you are doing. If you don't feel comfortable doing this on your own, find a guide.
When you're hiking along the Kander River, remember that it's used for hydroelectric power. As a result, water can be dammed and released at short notice, causing the river's level to fluctuate widely. You'll see many multilingual signs outlining the danger. Pay attention: no matter how gentle and inviting the river looks, it can turn into a torrent in a matter of minutes.
If hiking up in the snow and ice of the glaciated Bernese Alps, it is best to get as early of a start as possible. As the day progresses, the snow becomes slushy and mucky, and the ice becomes more slippery. It is wiser to trek when they are more solid.
This photo was taken at midday, and many other trekkers had already walked along this same path, hence you can see the dirty tracks left along the snow.
Now some of you may be expert glacier climbers, while others may be ignorant, such as myself, on the must-do's of trekking along these icy bad boys. Out of common sense I knew that I should wear sunglasses to protect my eyes from the high UV sun rays, because being high up in altitude and the sun reflecting off the white surroundings can be damaging to your sight. However, I failed to wear long pants, since I was heating up profusely, and as a result my legs became a nice shade of black after 9 hours of trekking along a glacier, with the sun's rays frying up my exposed thighs. Unless you're up for a deep bronzing, or frying in some of you all's cases, I'd recommend wearing clothing on any part that you do not want to be scathed.
When enjoying the outdoors around Kandersteg, be sure to use common sense. Know your limitations, obey the multi-lingual signs, and always let someone know where you're planning to go that...