(ALPHA) Devious Followers Redux 0.1.9

Snipped and edited from the DFC page. You can find a full guide written by @Lupine00 here although certain aspects have been changed.

• Your follower charges for their services, on a daily basis. You can configure how much they charge and how often they update their bill.
• You must regularly pay them - some debt is allowed - and interest can accrue.
• If you you are in too much debt, you must resolve the problem by taking deals, otherwise the follower may force you into deals, or take items from you to reduce the debt, or ultimately force you into slavery.
• Deal consist of rules that are dynamically selected according to your willpower, number of existing rules, and other factors
• Each deal relieves a certain amount of debt and provides a discount to further expenses (you can limit the discount).
• You can pay off deals if you have enough money, thus getting rid of the deal.
• Deals have a minimum period. Deals cost more to pay off before their minimum period.
• Most deals involve bondage or humiliation. Some involve both.
• While deals can be intrusive, they are designed not to totally stop you playing normal Skyrim.
• Things that happen to the PC can reduce a new stat called Willpower.
• If the PC's willpower gets too low, it becomes harder to avoid bad deals or resist arbitrary demands from the follower.
• High willpower characters can pick and choose their deals (for a price), lower willpower characters must take what they get.
• If you end up in devious devices, sometimes the follower will accept payment to help you out.
• The follower can play a (somewhat unfair) gambling game where you can win (or lose) money.
• The follower can play a (somewhat unfair) gambling game where they offer restraint keys in exchange for debt.
• Sometimes, the follower will take advantage of your mishaps with devices and add more, settings tasks you must complete before release.
• Wearing the wrong device in the wrong place can be hazardous, and the follower is more likely to begin a "game" in those cases.
• The follower has a number of "lives" that are lost when they enter bleedout, or perform certain tasks for you.
• Followers become very grumpy and unhelpful when their lives reach zero.
• Restore follower lives by sleeping for at least six hours.
• If the player opts into it, or the PC gets into too much debt, the follower may take control of the PC's gold.
• This is both a mechanism to mitigate theft from the player, and to make it worse.
• Any time you can pay off all your debts, the follower doesn't control your gold, and have enough willpower, you can get rid of the follower.
• If you have deals, or owe money, or have very low willpower, you cannot get rid of the follower.
• Characters with very low willpower may automatically gain a follower.
• There is an optional minimum contract period. 
• The follower is essential and cannot simply be killed to get rid of them.
• Multiple followers are supported, though only one will be devious at a time, you can configure how much extra you are charged.
• There is an MCM lockout for the truly hardcore that is vicious. Use at your peril. It's OFF by default (once turned on, there is no OFF switch).
• Each day there aren't enough deals to amuse the follower, the follower becomes more Bored.
• Bored followers charge extra for their services. Thus daily expenses tend to increase over time.
• You can get spanked to reduce the follower's boredom.
• Each time you pay your debts, you lose a little bit of your ability to resist the follower's attacks on your willpower.
• Pay off deals or make cash donations to priests to improve your resistance again.
• If you get into too much debt, you can be enslaved (optional). The enslavement should still let you play Skyrim, up to a point, but there's a lot of bondage, sex and humiliation.
• DFC slavery does not have whipping (yet), but there are other punishments.
• The follower may eventually dispose of you, via Simple Slavery, or a built-in DFC mechanism (optional configuration).
• If you don't enable slavery the worst outcome is some harsh bondage.
• You can configure DFC enslavement to use Submissive Lola the Resubmission instead.