While I may have been in the computer science field for over 20 years and understand cryptocurrency, what is difficult is deciding WHICH coins I want to add to my porfolio.
Literally THOUSANDS of coins and tokens!
I came across this site called Viewbase.

It is not an Exchange or Wallet. Just good ole fashioned DATA! The way I like it! Organized!
I LOVE IT! One of my favorite features is viewing coin sorted by SECTOR!
If you're wondering which coin(s) you may want in your portfolio, I'd suggest going to Viewbase, go to the sector tab and find a sector that you know a lot about.
You will see what coins/tokens are being used by that sector and then, from that point, you can do some due diligence ( another post of mine ) and see what one excites you!