First, when you go to Bonaire, it is often expected that you will do a check out dive just to re-acquaint yourself with your equipment and general procedures. Commonly, this is done at a resort on your own. If you are at a resort, do not be worried because there will be staff (and other experienced divers) around who will happy to assist you, if needed. All the dive resorts on Bonaire face west and the reef parallels the west coast.
A check out dive might be as follows: Gear up on the dock; giant stride or stair entry; submerge and swim around over sand in 5-10 ft of water; when you feel comfortable, venture downhill onto the reef (this will be westward); try to observe and remember some obvious landmarks that will be useful for the return swim; level out at 30-60 ft, as comfortable; swim around and enjoy yourself; return uphill (eastward) into shallow water; if you have memorized landmarks or there is an underwater guideline of some sort, follow them back to the dock; if there are no guides, memorized or other, return to the shallows, then surface, look around for the dock and return to the dock. Diving the house site a number of times builds confidence.
The same basic procedure is followed for most of the Bonaire shore dives, whether from rocky entries or dock entries. Compass direction may change a bit, but not too much for most dives. If you return in an eastward direction, you will run into the shore. Bottom line: most dives on Bonaire are very easy to navigate because the reef parallels the shore and even if you get "lost," you will generally be within an easy surface swim of your entry point. Just observe all the usual precautions if you do surface from depth while still out on the reef.