Start here - for the stock stuff
http://www.thirdwire.com/man/sf2/Strike_Fighters_2_References.htm#Air-to-Ground
JSOW, JDAM (post 2000) , HARM are not in scope of the stock game so you must be playing with Mods already - suggest you get used to the unmoddified game first IMO - you need to crawl first.
All the weapons are real so Wikipedia can help give you an overview of each one
E is the default ground target key - if you have changed that then only you know what that key now is -guided bombs press E to target and fire (when in range- you may have to guess this)
Unguided bombs require you to practice until you can hit the target I'm afraid http://www.simhq.com/_air/air_055a.html