Staking Atom can be done through your wallet. If you self custody, Keplr (a browser extension like Metamask) or Cosmostation (a mobile app wallet). Staking pays around 7% APR, so its boring but safe. Many major exchanges also have Staking options for ATOM, but as usual you are trusting a Cex with your money.
To add to a liquidity pool, you would need the Keplr wallet, and connect to Osmosis. As to what pools, the ATOM/AKT is my favourite. I have a big AKT holding, and it's price has been relativaly stable lately, as has ATOM. Less IL risk than an OSMO pool I think, and still nice APR.
Staking returns should increase over time, as some revenue from Gravity Dex and other Cosmos Hub activities will flow to staked ATOM's.
Posted Using LeoFinance Beta