It is because the game is in alpha that there is no guide. The devs make the many changes and do not want to also have to update a guide as they do so. There are very many who would agree with you that the absence of a guide makes the great difficulties. But I urge you to ask the questions as there are many people who will be glad to answer them.
The game is not intended to be easy. The devs state that they would expect for you to lose one or two characters before you learn to play. Also, in case you had not realised it, the boar did not kill you, only he renders you unconscious. Most times the bear does 9 or 10 hard hit points of damage and the boar does 3 or perhaps five. You have one hundred hard hit points to begin with so you may survive 10 attacks by the bear and at least 20 by the boar before you die.
There are three things you must do to survive when you are new. One is to evade the boars and the bears until you have the method to heal yourself. One is to wear the shoes. And the last is to eat, for you can starve to death.