Need to farm a lot of sand but you don't want to waste your shovel on that? Use torches! Place a torch under the sand and the other sand blocks (on top of it) are destroyed too. Note that this technique also works for gravel
You'll likely find pumpkins first, and these are far more useful—melons provide small-change food (similar to cookies) and are used for brewing, but pumpkins provide Jack-o-lanterns, which are valuable for marking your way and the direction home. (They also can be used to create golems and make pumpkin pie. You can also wear them on your head to prevent endermen from seeing you.) However, the two crops grow almost identically. They do use farmland, so that 9×9 plot with a water block works well, but instead of planting the whole field, you will plant half the squares, in strips. These will grow into stalks, each of which needs dirt or farmland next to it to place a fruit. When you harvest the pumpkins or melons, leave the stalk to grow another fruit. See the appropriate tutorial for advice on how to arrange the fields
Once you have string, fishing becomes an extremely viable source of food, especially as fish are infinite but passive mobs do not respawn. Catching 7 or 8 fish will easily earn you a couple of levels per minecraft day, depending on what level you are at. Fish, while not as good for hunger as meat, can be much easier to obtain. Try building a small island in the middle of a lake, as this will prevent mobs from attacking from behind at night. Also remember, if you ever find yourself just a couple of levels short for an enchantment, fishing will get it for you. (Although a better option is to kill mobs at a spawner). If you are playing PC release 1.7 or higher, you also have a chance to fish up treasure such as saddles and enchanted bows and fishing rods. See fishing for more information
4. I hate how this guy talks but this video is sooo useful!
256 Tips and Tricks about Minecraft[ For people wanting to find out more information about Minecraft and learn new tricks. This is basically a big collection of general information about Minecraft.
YouTube Video (view on YouTube)