I am sure the mods have a tutorial they can share, but if you already have ALCX in your wallet, staking those is relatively easy. Go here https://app.alchemix.fi/farms and click on the "ALCX Pool." There you will you see how much ALCX you have available to stake. Choose how much of it you want to stake and click "stake." I believe your wallet will prompt you twice after that. Once to "confirm" and once to actually stake. Both of these prompts will incur gas fees, so I would suggest performing the staking during non peak hours (if you don't know when that might be a simple google search on "ETH gas fee peak times" should do the trick). Especially the way gas fees are right now.
Hope this helped and welcome to the community.
