Can someone review this Wiring Diagram and Parts List

[ParaDiddle]

Here is a wiring Diagram for a wavemaker device for aquariums. I don't know squat about electronics (I'm a programmer), but I think I can handle this. I'm assuming that once I order the parts that I can figure out how to solder everything together.

Here is the diagram:
https://www.cyberreefguru.com/electronics/wave.gif

Here is the parts list:
https://www.cyberreefguru.com/electronics/parts.list.html

As you can see the part numbers are abour 8 years old. When I look up the MC1455 at Digikey there are 3 of them. Which one do I need for this project? Here is the link https://www.digikey.com/scripts/DkSearch/dksus.dll?Criteria?Ref=242433&Site=US&Cat=31523926

Also, anyone know a good URL where I can learn the symbology of wiring diagrams, so I know what I'm looking for in parts catalogs?

Sorry for being a NOOB. I know I can figure this stuff out, I've hacked things together before with wiring diagrams and I'm not afraid to try anything.

 

[Roff]

You can use any of the MC1455s, but you probably don't want to fool with the top one in the list, which is a surface mount part. You can actually use any 555-type timer for this application - LM555, NE555, TLC555, etc. You could even use LM556, which has two timers in one package, but that would probably confue you even more.