BitBond is a P2P lending site where you loan to people and earn pretty decent interest too,haven't tried it yet but Ive heard good things about them.
also if you choose to invest with them try to find people with lots of repaid loan. Higher chances of you getting paid back
i would be carefull with thoose lending platforms.. ive never get my money back so far...
Best investments that you can make with Bitcoin is just buy low and sell high that is the best option to do that.
But you never know what will happen with the value and that is the problem, you never know when to sell or buy it.
Yes that's probably the best way but before doing that we need to do a proper market research just to make sure everything goes smooth and i personally buy bitcoin when the price goes down because i know it's gonna increase again