Start with what you know
You already have the parts that take the longest to learn. Thinking in expected value, sizing against a bankroll, sitting through variance and staying disciplined when a decision goes badly are the same skills at a trading screen as they are at a poker table.
What's new is the vocabulary and the mechanics, and both come with practice.
Start with a wallet. You'll need one before you can do anything else, and setting it up takes a few minutes. Compare your options at solana.com/wallets.
You'll see DYOR everywhere in crypto: do your own research. A post promoting a token is marketing, and the person who wrote it usually has a financial interest so buyer beware.
From there, work through the rest of Learn at your own pace, and take your time with Staying Safe on Solana before you move any significant amount of money.
Start small, and take your time learning the mechanics. The rest you already know.