This is never investment advice. Let me know what I missed, and what tools you enjoy using.
Links to help you DYOR
Gas Tracker https://etherscan.io/gastracker
Gas Cost Estimator https://etherchain.org/tools/gasnow
Icy tools https://icy.tools/
LooksRare https://looksrare.org/ – for when OpenSea servers are overwhelmed.
Token Trove: https://tokentrove.com/ another NFT marketplace
NFT Stats https://www.nft-stats.com/
NFT Scoring https://nftscoring.com/trending Y-Combinator startup
Rarity Tools https://rarity.tools/
Proof of Attendance Protocol (POAP) https://poap.xyz/
Super Rare https://superrare.com/ – NFT marketplace focused on authentic art
Nifty Hype https://www.niftyhype.com/ – news and insights for NFT industry
Dapp Radar: https://dappradar.com/ – dapp rankings among various ecosystems on different chains.
Twitter / Spaces https://twitter.com/home
PSA – grading services for trading cards IRL https://www.psacard.com/