some of that helped alot. (I wasnt looking for what to use on the schematic.. but how to learn to tell for myself, in general)
to summarize.. to see if I 'got it'
1.) (It depends!) LOL
2.) big(er) values will command/default it to be a electrolytic type
3.) 'De-coupling' caps for small values up to around 0.1uF will be 'ceramic'
4.) 'De-coupling' caps for larger values will be electrolytic (aluminum)
*** (again sorry for noob question..how do I tell a de-coupling cap vs another (Audio coupling?)? just by the placement? and overtime/experience of what the cap's purpose is?)
5.) 'Audio coupling' caps are usually polyester/polystyrene type
6.) High Stability/Freq -Silver Mica type (never even heard of these I dont think... I have mostly been limited to whats available at RadioShack
7.) If AUDIO is a concern/focus, use: C0G / NPO type ceramics capacitors
8.) Dont feel bad many people have these problems =)
How 'versatile' are these for swapping out?
I believe C2 was 'noted' as being a SMD tantalum 100uF/10v cap..
but I dont have one of those.. (I have an electrolytic one though? would it work.)
Is there any 'rule' or 'tip' on what can be substituted for what? (again only type)
or as long as the 'values' match.. its interchangeable? (which I dont think it the case...is it?)
Again thanks guys..it helps a bit
(I have a new thread coming soon. asking for help on what 'exact' components to order.. ordering form Digikey/Mouser..etc is a bit 'overwhelming to the noob out there.. (lots of choices for each part..etc)
Looking to order a few 'shift register' chips I guess..
and probably some grabs bags of caps of all values & types off ebay?? (or another suggestion?)