Totems are pretty easy to find. They have no impact on the game if you want to depend only on your intuition (or this guide). Totems are small hints, not always clear and understandable, that shows you the fragments of a possible future - your decisions will determine whether the outcome will be same as in the visions. What's important, they not always show the close future, sometimes a totem found at the beginning of the game might show you one of the last actions before the game ends... Collecting all totems will allow you to watch a video - events from the past.
Totems are divided into 5 categories:
death totem - shows you the possible deaths of the character that finds it;
guidance totem - shows you the events to which he might want to get, as they are good;
loss totem - shows which friends can die in what circumstances... in difference to the death totem, loss totems don't show the future of the character that found them;
danger totem - show what you can expect soon. Each of the events shown by this totem will be related to making a decision or participating in an action sequence;
fortune totem - shows you some good events in the future. Fortune totems are hard to analyze, but after examining them thoroughly you will notice that they are the best help when it comes to making decisions.