Part of what you have to determine is the amount of money you plan to use.
Then decide what type of currency you want to support like, POW or POS.
Then you should research the area you want to play in and narrow the field even further.

You can put thousands into a rig, or thousands into day trading, or thousands into staking.

There is no wrong way to go, unless you just want to gamble to gamble.
Keep in mind there are no guarantees.