I am a newbie to the forum and Crypto. There is a ton of information here but i'm quite confused in starting my journey. I cannot see members of staff online and don't really know who to contact directly hence my post with some question many may laugh at.
You're not expected to contact any, the forum here is a discussion platform and anything you posted will receive due response from any member, but before that, you can take your time in going through the forum reading and learning, there are pinned threads and other important discussions you can get from members threads, you can as well make use of the forum search in knowing some possible discussions already made on the forum.
1. Do i do the same and open various wallets and buy the coins that way or do I have to use an exchange like Coinbase or Binance to buy the coins?
You can make use of an exchange to buy the coins and send them to a personal wallet like electrum and safe keep the private keys, for more information's on this, read through this threads.
Creating Electrum Cold Storage
Creating a cold storage walletdecentralized exchange
https://bisq.network/https://hodlhodl.com/2. If/when I want to sell the coins do i withdraw via the wallets or do i go onto an exchange and sell? Then transfer the money to my bank account.
The same way you send to the wallet, you're going to copy your exchange wallet address to the personal wallet you're having and make your transaction, then use the p2p network on the exchange to sell the coin to fiat.
3. Is there a secure wallet I can get with can hold all the coins in 1 place or do i have to open multiple wallets?
You will need a wallet that support many coins, in this case you may go for trust wallet