I am a beginner coins collector I still have long way to learn the proof, clad, and error mints. Do any of this look like proof or clad?
They are all normal circulation strike coins. Not proof. Proofs will have a mirror like surface and an "s" mint mark.
Clad just means multiple layers of metal. Essentially clad is any coin that isn't silver. For starters with Kennedy halves they are 90% silver from 1964 and earlier. And from 1965-1970 they are 40% silver. Anything 1971 and up is clad.
Pretty much any dime, quarter, half, or dollar minted for circulation after 1964 is clad. The dimes and quarters will have zero silver content, whereas the halves can have 40% silver content if dated 1965-70 (as noted above). Easiest way to tell a clad is to look at the edge. There will (typically) be a copper colored layer sandwiched between two layers that look silver (it's not silver though, except for the few exceptions). Basically, look at the edge of any coin in your wallet, and you'll see clad coins.
Just for complete accuracy...the 1965-70 Kennedy's are clad as well. Just clad with silver rather than nickel. They are a 80% silver/20% copper outer layer clad to a 20% silver/80% copper inner layer. So, they are a 40% net silver.
