Connecting your wallet to any site is not a safe thing for your crypto assets, except it is mandatory in other to participate with the site's activities. As a newbie in the crypto community, safe keeping your assets is very important, cause when it is lost, getting it back is almost impossible due to the decentralized nature of the crypto community.
Talking about wallet, making Personal research on which wallet to use, what private key is all about and the different types of wallets, will give you a firm foundation on how to safe guard your crypto assets.
Bounty/signature campaigns in this forum is a way of generating income, trading is also a profitable way of making tons of money, yet without experience, one can lose everything in just a single mistake.
Investing has no much technicality, but yet requires your time for personal research and findings. When it comes to investment in altcoins, it can be more difficult to identify a genuine project from scam.
Securing a profitable asset to make investment is looking at Bitcoin or the top 3 coins on Coin Market Cap (CMC).