New to the game and I'm trying to learn how to calculate odds on the spot.
Anyone have a one stop shop for all hold 'em odds. For instance, I know that AJ v KQ heads up preflop is 60/40, but I don't know how to calculate that. I only know that percentage because I've used an odds calculator. Now what if there's a third person holding 5 5, how do you calculate the odds that AJ will win the hand if it gets to the river?

Any insight would be greatly appreciated.

You don't do this at the table, you do the work away from the table to get an idea of how certain types of hands do against opposition ranges

you can use equilab found at poker stratergy com
its a free down load and you can plug in hands to see how much equity you have in just about any situation.
AJ suited vs KQ suited VS 55 give ALL three hands about 33% before flop

You run enough scenarios until you can estimate the 99% of cases with enough precision

Actually, for some cases, you may be able to do a quick calculation while playing if you’re good at such things. Here’s an example where you put villain on a river range and flushes and straights are not possible:

Hero: AK. Board A K x x x. Villain Range {AA, KK, AK, KQ}

Villain Combos and Result: AA-1, lose. KK-1, lose. AK-4, tie. KQ-8 – win

Villain range has 14 combos, hero loses to only 2, ties 4 and wins 8. Counting half the ties as wins hero’s equity is 10/14.

Even if doing this while playing is not realistic, knowing the math can only add to your decision-making capability.

While you are studying equity away from the table, you still have to put the Villain on a range. And Statmanhal's approach works only if the range is realistic. And you are a noob and have not had enough experience to put Villains on realistic ranges. Yet.

Every hand you fold is an opportunity to practice putting at least one Villain on a range. And if said Villain goes to showdown and you see what they had, you get a "mid-course correction" on the spot.

Use the times you fold wisely, and invest in your education for free. All it takes is focus and paying attention. Don't watch the games, don't lust after the servers or the dealers, put Villains on ranges and use the auto-correct moment of showdown to guide future attempts to put Villains on ranges.

Yogi Berra said it best: You can observe a lot by just watching.