how did it go any pointers what to do or what to expect?
Every doctor gives their patient a list of pointers, so do follow those, which may relate to the doctor's preferred method, or time of day, or previous patients' experiences, etc.
Here are some tips I remember that worked for me:
Eat low-fiber foods for a day before the prep (no salads, fruits, whole grains) so that you'll have fewer solids to pass.
Refrigerating the drink makes it a tad less vile.
Drink it through a straw, with the straw positioned towards the back of your tongue, so that it bypasses most of the taste buds as it goes down. Keep a glass of water nearby, so if you get an awful taste you can rinse your mouth with plain cold water.
Drink it gradually over a couple of hours - gulping it down quickly can cause cramps or nausea in some people. Better not to feel like you might vomit, standing with your head over the sink - at the same time as you feel the need to immediately position the other end over the toilet.
Reserve a bathroom that you don't have to share, so that you can get to the toilet quickly. You may have to go very urgently at times, so wear something like a robe that doesn't require taking time to unbuckle, unbutton or unzip.
Have on hand at least a couple of rolls of toilet paper - the soft gentle kind. Baby wipes are also good.
Smear vaseline on the skin around your anus before you go, and again after cleaning yourself after each movement. The continual passage of fecal fluid can become very irritating, and the vaseline will help prevent its contact with the skin.
When you think you're finished and can go to sleep... you may not be. Cover the bed with a layer of towels, just in case more comes out while you're asleep.
If you are really into biology, you can ask to have the procedure without sedation. You'll be lying on your side, with the doctor behind you, so you'll have a great view of the same screen he's watching as the scope moves along your colon. Incredibly beautiful, like watching one of those IMAX nature films.
There can be small differences in doctor's skills, so I would ask for a recommendation, especially if you're going for non-routine reasons, such as having symptoms or having a family history.