Easy Sneak Leveling
Go to Whiterun and enter the empty, outside stall next to the horse. Crouch down in the inside corner next to the barrels and begin sneaking. This is done best at night when the stable owner has gone home since he usually sits outside in the chair next to the stall. You can also sneak inside of the horse's stall if he is outside of it.
Easy Sneaking Level Up
Travel to Whiterun stable and go to one of the unoccupied stales beside a horse and sneak. best done at night when no one else is around. you can also sneak beside the carriage driver.
Smithing, Money & Speech
Beginning of the game
Go with either Hadvar or Ralof it doesn't matter. Find the torture room. Take everything in the cage with the mage. Later find Riften and have at least 100 coin. Go to the meadery there. Talk to the bartender. Pay him ask him the middle option the select the 1 where you pay him. Do that until you have 25 speech. Then do the middle option and use persuade. Do that until you have 100 speech. Get bribery and haggling perks. Go to a court wizard and sell the magic stuff you don't want. Get lots of money. Go to the nearest blacksmith. Ask if they need help smithing. Do what they say and you'll get the stuff you made. Sell the stuff you made and get tons of money.
Free arrows of any kind
go to solitude near castle dour. wait until 8 am. three guards should come out along with the head honcho dude. find which ones shoot at the targets before they equip their bows and arrows. pickpocket their arrows and replace it with 1 of the desired arrow.. Ex: place daedric arrow on guard. he will only shoot daedric arrows.
Smithing & Money
Any Smithing Tool Place
Go to any place you can make armor and weapons. Talk to the manager person. Choose the option that lets you help them smith. Do what they say. You should go up a couple blacksmithing levels! After, they should give you the stuff you made. Sell it to them for some extra cash.
Beginning of the game
Open the cage with the wizard in it and take everything... (In the Helgen Torture Room). When in Whiterun Talk to Farengar. Sell all the magic stuff. You must get at least 100-250.
This won't put you up by much levels but go to Whiterun and talk to "Adrianne Avenicci." Select the "Do you need help smithing" option (Don't know if it's the actual name). Do what she says and put on as a quest. You will go up at least 2 levels. Last to get extra money the things you made, she will give them to you and you can sell them back to her for some extra chedder. (gold)
Easy Sneak leveling
Black Briar Meadery in Riften
Found an easy way to level up your sneak in Riften. All you have to do is go into Black Briar Meadery and go behind Ungrien in the hall and sneak around. The only thing you have to watch for is people come up from the stairs to your left so wait for them to leave and you should be able to level up your sneak quickly enough.
Unlimited carrying capacity
All you need is to have a Raise Dead spell (higher levels work but the bare minimum is required for this). What you have to do is find anything or anyone you can kill (companions if you're desperate but even something as weak and small as a rabbit will do). Once you've killed it, place all the items you want inside it's corpse. Since corpses don't have a weight limit, they can carry everything in your inventory and more. Then, resurrect the corpse, which is now holding all of your items. This being will follow you for however long you the spell actually lasts (unless you have Dead Thrall which will revive them until they are defeated). The second and final part of this is you need to fast travel to any city, whether major or not. Once you get there, your corpse may have turned to ash but this is alright, because now you can take your items from the ash.
Note: some enemies/NPCs are glitched and cannot be revived or cannot have items taken from their ash. You should test this before putting all your items into them. Dragons are a definite no on this one, however you can put some things in their corpse and use any kind of revive spell to fling them great distances and still be able to get back your stuff.
Easy way to increase fire, ice, storm and heal spells
Buy a horse and take it to an empty area then use your fire, ice, or storm spells to do damage to it. Don't kill it. When it has low health, heal it to increase your xp.
Easily Sneak Level-up
This isn't the only place you can do this, it's just the place i've found works the best. (It helps if you have the thief stone equipped)
You gain exp for sneak any time you move around while "hidden"...even if you are not really hiding from anyone.
Go to Ivarstead and cross the bridge towards High Hrothgar. After crossing, climb the first few steps and then go to the left and climb back down the slope. You should end up on a little ledge overlooking the river with lots of big rocks on it. Walk towards the edge of the ledge in sneak mode until one of the villagers sees you and the little eye icon says that you are "discovered"
then back away from the edge and hide behind the rocks until the icon says "hidden"
now, if you just move back and forth behind that rock in sneak mode you will constantly gain exp for sneak.
I got my sneak from 20 to 40 in less than 10 minutes using this technique
Sky Haven Temple
After defeating Alduin Delphine will ask you to kill Paarthurnax, kill him and report back to Delphine at Sky Haven Temple. You should see a long table in the middle of the main area. From there head into the room left of the table and you should find a special Blades sword called "Dragonbane" sitting on another table inside the room.
How to kill giants easily
If your in a elevated area (mountain or large hill) lead a giant to a ledge, run behind him and use the unrelenting force shout to knock him down, this may not kill him but he will take significant damage, also you can lead them up a steep path and near the top shout him down, it is risky but each giant has up to 200 gold on him, so its worth it.
Eduj and Akin
There are two secret weapons that can be found in Volunruud. You can find Volunruud in the mountains just north of Whiterun. Enter Volunruud and you should find some bones on the ground near the entrance with a skeleton sitting in a chair to your left. Look down on the ground to find some gold and a journal. Reading the journal will start a quest, follow the quest and you'll get these two rare weapons off the enemy you fight to complete the quest.
Any armor level-up
There are several people, in the bars around Skyrim, who will bet your character 100 gold to fist fight them. Enchant some armor to regenerate health or find some jewelry that has it because the Npc cant do enough damage to majorly hurt you due to the enchantment. Let them back you into a corner and pummel you. My heavy armor skill went from 47 to 60 in an hour, and i leveled twice.
Fast Smithing leveling
any blacksmith (White run is what i use )
1. Talk to a blacksmith and buy all the iron ingots,iron ore,leather and leather strips in the shop.
2. Go to the tanning rack and make leather strips with the leather, then do the same with the iron ore at the smelter.
3. Go to the forge and make as many iron daggers as you can.
Steal anything un-noticed
At any shop, if you pick up any basket or pot and place it over the shopkeepers head, they won't notice you stealing everything they own
More unlimited steel arrows!
Thieves Guild, Riften
Inside the thieves guild, (not the pub part, but the actual back guild area), there is an area where all of the members hang out. (Big circular area which connects to the training room). Inside the main chamber, there's a few small targets set up for archery practice which the NPC's use. If you see one of them using it, just hop over near the target (not too close) and when they shoot, just pluck the arrows from the target.
After a while, they do stop shooting.. but return to it promptly after you move away for a little while.
I grabbed 120+ Steel Arrows from this before the NPC stopped shooting for me.
Infinite steel arrows
go to solitude and go to the imperial legion headquarters. Go to the courtyard where there are several soldiers shooting arrows at targets. You can take the arrows from the targets and the men will continually shoot at the targets. They never run out of arrows. This is a way to get infinite steel arrows and money because you can sell the arrows.