My aim is to buy/sell this is on the long run, but for now I need to learn.
I want to try with as little as possible just to learn.
That basically translates to, you want to invest in bitcoin. And you already have the desire to learn.
You also need the right mindset and attitude to make the best decisions under pressure.
Of course starting small relieves most of that pressure I you can learn more without the burden of possible huge losses.
I need a reliable website to create a wallet and then start trading may be, with reliable website, I saw some asking for cash to be sent by mail...not sure if this is how things are done.
I think you can buy bitcoin on coinbase. And you can trade on exchanges. For storage, I would suggest a hardware wallet. This also needs lots of learning and practice.
You can start by creating an account here. make a post until you rank-up to junior member. then join a Bounty campaign. It's the basic thing that you can do in cryptocurrency without spending a penny. you can also start creating a wallet in Myetherwallet. but make sure that you're entering the correct website. There are a lot of phishing websites nowadays. so you should be very careful.
MyEtherWallet is for ERC-20 tokens and and does not support Bitcoin.
As for bounties, it's not the best way to start. Especially when you want to go into bitcoin
You most time end up with alts at one quarter it's ICO value.