Equipment:
There are several items available for you to use. Experimentation will help you decide which works best for you. Disposable enemas are great for a quick touch-up before or a quick rinse out afterwards. However, from a complete cleansing point of view they are ineffective and costly. Syringe bulbs have a major advantage over the disposable type. You have a reusable, refillable container that is easily transported and used. But, here again, they are not practical as you have to refill often. The old fashioned hanging douche bag is great for a beginner. They come with a flow control device which will allow you to regulate the rate and amount you wish to take in. The bag is portable, easy to clean and use. Cost wise the bag is cheap and will last for some time given proper care and storage.
The shower shot is another option. They are somewhat expensive, ranging in price from $50 to $75 depending on where you purchase one. Shots are equipped with an aluminum nozzle attached to a flexible hose, connected to a 2-way valve that is usually installed in the shower. It is portable, but keep in mine you'll need a wrench to re-install it. Polypropylene tubing is cheap, flexible, easy to use/clean and sterilize for multiple person usage. Its usually connected to a 2- way valve, like the shower shot and allows for greater depth in cleaning.
Having selected your equipment, eaten and mentally prepared, you are now ready to begin. Relaxation is your best friend when cleaning out. Your bowels will be receptive and agreeable to the enema. Select a lukewarm water temperature; something that feels pleasant to the skin. Remember, the bowels cannot "feel". Water that is too warm may cause burning of the interior lining. Water that is too cool may cause cramps. Apply a small amount of lubricant (something that is NOT water soluable or petroleum based) to the anal area and nozzle. Lubrication allows for easier insertion of the nozzle. Allow the water to enter you at a rate that doesn't cause immediate discomfort or "triggers" the evacuation response. When you reach this point, remove the nozzle and retain the water by clenching your anal muscles. Retention allows the water to move around in the bowel. As it does, the pressure you felt in your side will subside and additional water may be injected. Time and experience will teach you when to add more or release what you have. When releasing, force yourself to do so in a calm and relaxed manner. Sudden expulsion of the enema can cause fissures and abrasions to the rectal tissues. Use common sense. Repeat the process until the water being released is totally clear.
Lubes:
Realizing that the anus wasnt intended for the insertion of foreign objects, you have to take into consideration two things: what lubricant you should use and how to coax it into allowing the insertion of a foreign object. Lubes basically come in 3 main classes; water soluable, tropical oil based and vegetable based. There is another class which is petroleum based, such as vaseline, but it's use is strongly discouraged as it is not readily digestable, leaves a residue in the bowels that inhibits the normal functioning of the bowel, rapidly deteriorates latex gloves and is harder to wash off the skin and out of laundry. Each class has it's own particular advantages and disadvantages.
Water soluable lubes (Elbow Grease Gel, KY) are water based. These have a tendency to dry out and become tacky during use and need to be reapplied several times or moistened with water during a session. A spray bottle of water is a useful and convenient way to do this.
Tropical lubes (Elbow Grease regular, Fist, Natural Lube, etc) are made from palm or coconut oils and usually do not require any additional moisture to keep them slick. Care should be used as some people are allergic to tropical oils and products containing them. Ask your partner before using any lube that contains as part of it's chemistry palm/coconut oils. Tropical lubes, like petroleum, cause a rapid breakdown of latex items, so use a little extra caution and change gloves often during a session. Vegetable based lubes, such as Crisco, are made primarily from corn or soybean oils. They are heavy, do not need any additional moisture to keep them slick and provide excellent adhesion. Breakdown of latex items is minimal and the cost is negligible compared to the other types of lubes. Some lubricants, with the exception of Crisco, contain Nonoxynol-9. Ask your partner if he is allergic to it. If he doesn't know, procede with extra care, or better yet, select a lube which doesn't have it.
In fisting, there can never be too much lube. You must remember that the sexual activity that you're engaging in causes a tremendous amount of stress to the anal area and the bowel, regardless of how careful you are. So the smoother you can make the penetration, the better. Lube contamination is a major concern, especially if you are involved in a group scene. Most of the commercially available products come in squeeze tubes or with pump tops for dispensing. Others, such as Crisco, do not have these advantages so extra care must be taken to prevent contamination. The easiest way to do this is to portion the lube out into disposable containers. This way the original container doesn't become contaminated by everyone "helping" themselves. In a 1 on 1 session, the small cans of Crisco are easy to use and dispose of. With a little experimentation you will determine which lube is best for you. The best rule of thumb that I have found is to use whatever the bottom prefers. If you, as the top, are allergic to the chemical structure of the lube, take a few extra precautions to protect yourself such as wearing a long sleeve shirt with the gloves up over the sleeve cuffs or obtain some veterinarians' gloves like those used in artificial insemination of livestock which go all the way up to the armpit.