you are at right forum read the post and responses in BITCoin talk , do research , create followers on social media accounts like FaceBook,Twitter, reddit, medium,telegram etc . Start posting your response or start interacting on various forums of Bitcoin talk .This will help you improve your rank

Get your self registered on exchanges like BITTREX, Coin base, hitbtc, binance   and set up your My Ether wallet

after doing all above start looking for companies offering airdrops and bounty programs go for them , when you are busy doing all of above buy any of the big four BTC,Ethereum,Ripple, Lite coin in small small amounts