How to get started with ethereum?

Hi,

Hope everybody is well?

I was wondering if anyone could help me getting started with ethereum?

I've installed geth on my mac through terminal and I have idea what I am doing.

When i run geth, i get the following:

I0213 17:54:37.759120 16562 database.go:71] Alloted 16MB cache to /Users/J/Library/Ethereum/chaindata
I0213 17:54:37.768618 16562 database.go:71] Alloted 16MB cache to /Users/J/Library/Ethereum/dapp
I0213 17:54:37.770462 16562 backend.go:314] Protocol Versions: [63 62 61], Network Id: 1
I0213 17:54:37.770702 16562 backend.go:362] Blockchain DB Version: 3
I0213 17:54:37.771662 16562 blockchain.go:214] Last header: #327431 [b53b8844…] TD=1567666010795014309
I0213 17:54:37.771681 16562 blockchain.go:215] Last block: #327431 [b53b8844…] TD=1567666010795014309
I0213 17:54:37.771688 16562 blockchain.go:216] Fast block: #327431 [b53b8844…] TD=1567666010795014309
I0213 17:54:37.776789 16562 cmd.go:114] Starting Geth/v1.3.3/darwin/go1.5.3
I0213 17:54:37.776898 16562 server.go:311] Starting Server
Fatal: Error starting Ethereum: listen udp :30303: bind: address already in use (possibly another instance of geth is using the same port)


??

Ive also installed Mist from Github, which says:

Unable to connect. Please start geth with the following options:

geth --rpc --rpccorsdomain "http://ethereum-dapp-wallet.meteor.com"

Optional add: --unlock .

I have tried running this however I get this:

I0213 17:56:31.659442 16678 database.go:71] Alloted 16MB cache to /Users/J/Library/Ethereum/chaindata
I0213 17:56:31.669590 16678 database.go:71] Alloted 16MB cache to /Users/J/Library/Ethereum/dapp
I0213 17:56:31.671414 16678 backend.go:314] Protocol Versions: [63 62 61], Network Id: 1
I0213 17:56:31.671621 16678 backend.go:362] Blockchain DB Version: 3
I0213 17:56:31.672600 16678 blockchain.go:214] Last header: #327431 [b53b8844…] TD=1567666010795014309
I0213 17:56:31.672617 16678 blockchain.go:215] Last block: #327431 [b53b8844…] TD=1567666010795014309
I0213 17:56:31.672624 16678 blockchain.go:216] Fast block: #327431 [b53b8844…] TD=1567666010795014309
I0213 17:56:31.678333 16678 cmd.go:114] Starting Geth/v1.3.3/darwin/go1.5.3
I0213 17:56:31.678435 16678 server.go:311] Starting Server
Fatal: Error starting Ethereum: listen udp :30303: bind: address already in use (possibly another instance of geth is using the same port)



Can anybody please help me get started with ethereum, or maybe point me a good direction for some tutorials to use?

Many thanks,

J Lakey

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