Hello and welcome to HnH. Some important points have already been randomly thrown at you by Tyler
Don't worry if you only understood half of what he said, you won't need it all right away. As he suggested read the beginners guides in this very subforum. Namely by Sevenless and Jackard. For further questions consult the wiki or open a thread here.
The hearthlands are a harsh place and yes you will probably die. You should know this is not only a building and crafting MMO, but has open PvP and permadeath, which are necessary prequisites to have a world with lasting consequences and are more meant as tools to punish criminals than as tools for the criminals themselves. Don't let a death get you down though, we all have died....more than once. It is in the spirit of the game to then dust yourself off and give that bear, murderer or river that was responsible hell. Although nobody found out yet how to give rivers hell...
Well, that being said: Good luck and have fun.