For the previous: here, here, here and here.
Time to go on on the yeld tab. Here comes the pools:

The list of the pools that can be filtered by Chain, platform,...
Clicking on the pool you'll get a data tab:

Now. a few warning: the list of the pool is not very precise. I've found some pools in the list that I didn't find in the platform and viceversa. Always verify that the pools that you see is really available and don't get mad if you don't find the pool you entered in Beefy (or pancake, or ...).
Abaout the details tab: I am supposing that is updated only once a day. Maybe 01:00 UTC, because the similar screen on beefy is this:

As I'm writing (Around 18:00UTC) values are slightly different, but there is no prediction about the evolution of the APY.
So, if you are operating on Beefy, base your evaluation on its data, but if you are into another platform such as Pancake,where there are very poor informations, this could make the difference between gain and pain.
This post is a little short, but I want to verify a little more before writing my conclusions and the next two tab are very simple to describe, so I'll keep this shorter than usual.
By the way: the referrals:
DeFi platform:
Biswap very similar to Pancake Swap, but with referral program.
Cake DeFi earn 30$ in DeFi as you deposit AND leave for 28 days 50$.
Passive Investment platform:
Midas A reliable financial platform to earn from your Crypto
Games:
RollerCoin earn BTC, BNB, Doge, ETH... playng easy games register with this link to earn 1000 Satoshi
Coin-farm a very silly game, didn't test it deeply but I want to.
Passive earnings:
CryptoTab a browser that let you mine small amount of BTC, a good referral program, but needs 2/3 days for payouts.
Smiles earn BTC walking and playng chess
Peer2Profit A platform that pay for your bandwidth
HoneyGain Very well known platform that pay for your bandwidth
Presearch Get PRE token making usual research on internet. 25 PRE token as referral bonus
Trading Platforms:
Binance
KuCoin
Bittrex
Coinbase
Bybit