Tricky but not impossible.
The best thing to remember is you are in Swedish pergatory. You have forgotten all you knew and by being very aware of your surroundings, picking everything up, hitting everything. Playing with everything you will learn much, relearn much. As for food, it is verrry important and anyone who says it isn't probably doesn't play the game or is giving you a gentle troll (the only gentle troll in the game). You will die much from not keeping fed, even at your base just doing a little work.
There are three main bosses in the game - arrogance, ignorance and trees, so many trees.
Keep your volume up, dunna be playin no personal music as the game gives clues and warnings.
So with that young Valheim warrior, go forth and enjoy.