Step 1: Skeletons
Do: Use the bow and arrow against it. You can shoot further than it. Also, they burn during the day
Don't: Fight it up close. Then you will be in its shooting range.
Step 2: Zombies
Do: Use swords. You can inflict a lot of damage with them. You can also burn them during the day.
Don't: get surrounded by them. You can easily get destroyed by a group.
Step 3: Enderman
Do: Endermen get damaged by water, And kill them with bows and swords.
Don't: look into their eyes, because they become hostile. Also, they can teleport so beware.
Step 4: Silverfish
Do: burn them with flint and steel or bows and arrows.
Dont: actually make contact with them, as they can go into blocks and if you hit one, the surrounding ones will emerge from the blocks.
Step 5: Creepers
Do: use bows and arrows. Keep your distance from it
Don't: Make contact or get too close, because it will blow up. If it starts 'hissing', RUN!!!
Step 6: Spiders
Do: Use now and arrows. Spiders jump at you to attack and travel surprisingly fast, so keep your distance
Don't: Let them get higher ground as they will jump on your, and keep in mind they can climb.
Step 7: Zombie Pigmen
Do: Use bows and arrows or swords, as they are very strong so use a powerful weapon
Don't: set them on fire, as they are immune to it.
Step 8: Slimes
Do: get them in water, as they cant swim
Don't: Get surrounded, but remember slimes multiply when you kill them, and the smallest version doesn't deal any damage, but will try hurt you anyway :)