Thanks for all the replies so far!

I guess I should have posted my original plan:

1. Exchange USD from my bank account to Coinbase Pro via bank routing (was so easy on Robinhood)
2. Buy BTC, ETH with Coinbase Pro
3. Transfer BTC & ETH to Exodus Wallet
4. Use Exodus or Kracken to exchange BTC/ETH (or is there a better way to "pay") for other crypto (DOT) not available on Coinbase Pro
5. Transfer other Crypto to Exodus Wallet
6. Once enough funds are in Exodus, transfer to a Trezor.

After finding this beginners forum page, I'm questioning my Coinbase Pro and Exodus choices.

But if I am eventually transferring to cold storage, does it matter too much?

Hello! I just joined this forum after hearing it being mentioned in a book. It has been hard finding good information about bitcoin and crypto on the web so I'm glad I found this place! I have a few questions just to make sure I'm starting my crypto journey correctly.

Start:
I'm in California and have an Iphone.  I'd like to invest/play in BTC, ETH, LTC and a few others like DOT, LINK and possibly NFTs as I continue my research. I have a Coinbase Pro account and the Coin Wallet. I started it this week after getting out of Robinhood and learning more about Crypto and DeFi. I'm now realizing CoinBase Pro may not be my best choice and I cannot buy or exchange for DOT within it.

Where to buy?
I have a bank account and a debit card.  It was easy to buy in Coinbase pro although I didn't like the long hold times.
Coinbase Pro also doesn't offer DOT or a few others I'm interested in and is a custodial wallet which I see it is not recommended.
What the best exchange where I can link my bank account, send money to it and buy Crypto in California? Or are there any places where I can do this with my debit card? Is there an easier/better way?

Where to store?
Before I found this place and read reviews, I had signed up for an Exodus account. I haven't used it yet and am now thinking of an Electrum wallet. It's funny, many of the articles and videos I came across recommended wallets that are in your "not recommended list" like Exodus, Trust, Mycelium and CoinBase Pro.  I'll also get a cold wallet once I have enough for it to make sense.

So, I'd like to buy DOT (which is proving hard as it is not on Coinbase Pro) along with BTC and ETC mainly. Can I do this with a bank account, one exchange, and an Electrum wallet?  Am I missing anything?

Please help me start my crypto journey and not make any major mistakes that can easily be avoided.  I'll research the forums now but thought I'd post this first post in case a kind soul would be willing to help point me in the right direction.

Thanks!

SmokeyQ