First, install Ender's Client.
viewtopic.php?f=11&t=50I don't think the default client's new minimap icons show creatures, so this will help you avoid the snakes (and bears).
On food, there are a lot of random spawns that are edible in a raw form. Mushrooms, blackberries, and herbs. The mini-map should show you these - though you may need to enable it in the options menu.
Once you find yourself a bit of food, your next step should be to work on your skills. Getting Foraging was a good step - I suggest getting Lore of the Lumberwoods followed by Hiking next. This will let you build a Leanto and move to a new area if the one it started you out in seems to be sparse on resources.
Also, read Sevenless's Guide to the New World. I never did read it, but I hear its pretty helpful for new players.
