You can actually get a Red Book from most Barnes & Noble bookstores too.
If you're looking for resale value, post-1940 wheats are near worthless unless they're uncirculated or have errors like the 1955 & 1972 doubled dies. 1960 and 1970-S had two varieties, a large and small date, that can be valuable. I have 1988 cents with small die cracks on the reverse, and one missing the designer's initials. The 2009 Lincoln bicentennial cents have a few errors on them as well; die doubling and whatnot. Your best cent reference is
The Lincoln Cent Resource.
Pre-1940 wheats have some value in any condition. Save any teen years' S mints as well as 1909, 1914-D, 1922, 1924-D, 1926-S, and 1931-S.
All 90% silver coinage stopped after 1964. They did mint Kennedy halves in 40% silver until 1969.
None of the circulated Ike dollars are worth anything more than face value. Uncirculated Ikes book a little higher, and proofs might have some additional value, but not much. Same goes for SBA $1, Sacagawea $1, and presidential $1.
Very few post-WWII nickels have value. The key date Jeff nickel is 1950-D (only 2.6M minted). 40% silver war nickels have large mint marks over Monticello's dome. Pre-1966, non-silver mint marks were to the left of Monticello, and post-1966, they are on the front under the date.
Save any silver Washington quarter from the 1930s, especially with a mint mark. Watch for die doubling in 1942 & 43 as well as repunched mint marks in 1950. 1949-P also has some value. Circulated 1950s and after are worth their weight in silver and not much else.
Early state quarters were rife with die doubling, die cracks, grease errors, filled letters, off-center strikes, etc. Some of the more notable ones were the:
*Delaware "Spitting Horse" (die crack from horse's snout)
*Minnesota "Extra Tree" (treeline die crack on reverse)
*Wisconsin "Low Leaf" & "High Leaf" (extra leaves on corn husk)
*Kansas "In God We Rust" (grease-filled T)
I'm assuming you'd have saved anything older than that in a different jar so I won't go into Mercs, Buffalo nickels, Indian Head cents, or old silver.