I'll just add some tips. I went down early in the week at Angel City (stepped in a hole) and sliced my shin pretty good so the rest of the week I was more selective on entries.
To start with and get accustomed, dive a few1 of the resorts. Arguably one of the best dives is Bari Reef and they have stairs. Enter from Den Laman condos, there's a Dive Friends shop there. If the water level is just under the dock you can also GS off the end but the sides are about 3' deep.
Just north of it is Capt' Dons - from their dive dock you can access Clifff to the north and the LaMachaca wreck on the same dive. It's a lot easier to pay their $5 and go in there than at DFB on the north side of Cliff which is over boulders. Buddy Dive has a nice dock entry also. At most resorts diving is free, just tell them you're there - and rent a tank from them?
If you feel llike walking down 1000 Steps (there's 64 of them) it's an easy beach entry in some spots. Of course Both "Leaps" are easy to get in and have a ladder to get out.
We walked in at Witches Hut but the tide was in so it was a steep 4' drop to a sandy bottom. At Bachelor's Beach south, if the tide is out, you step off the ladder onto the sand, if in, just drop into the water.
Windsock is a walk in off the a flat beach, maybe the easiest one there.
The sites near the Hooker tend to be rockier entries.
There's an exposed concrete slab at Salt Pier that's an easy entry point but we just went in between the parking area and the pier itself and were floating b4 we hit the ironshore.
Good advice above to look around at the south sites b4 entry - at some divers have piled up small piles of coral rubble to indicate a good entry point.
At some there's sort of an ironshore shelf that extends off the beach, it's slippery and sometimes ends in the surf - step off it into 3-4'.
The other thing to look for is there are sandy beach incursions at some sites that extend out into deeper water. They shift with the tides but here's one example. My buddy thought Vista Blue was among the best dives we did. Here's the entry there -
http://shorediving.com/Earth/ABC/BonaireS/Vista_Blue/c004508.jpg
Invisibles is also thought of highly.
I'd personally also do some boat dives. You can't dive Rappel any other way and 4-5 divers on our boat asked for it. Also IMO one of the best dives we did was Forest off Klein Bonaire - there's a forest of Black Coral at depth there.
Heed the warnings about leaving nothing in the truck you want to keep. It's such a small dive area that you will usually go by your resort more than once per day, ours was in Belnem on the main road so we left everything there and stopped between dive sets. You will find that if you do 2 south then 2 north - there's your surface interval.
Food we liked - It Rains Fishes and Donna/Giorgio's. rumrunners at Habitat was OK food - tables near the water look down on the Tarpon feeding in the lights. Service is really slow and you may have to ask for the check more than once - you're their guest and can stay as long as you want,
Make some provision to carry a phone - 90% of the dive sites have NO facilities, Take it with you, the kids are amrter than you about hiding places - and may be watching from the bushes.
Last tip, the south sites are flat with no distinguishable features - especially from the water. If you can, park the truck behind your entry point. There are some "riparian" areas they don't want you to drive thru also though.
Old info but there's some good site photos here -
Scuba Shore Diving Region: ABC Islands
