u/hidden-daddy

I am currently only invested in VOO and SPY within my Roth IRA. Just looking for help, I’m really trying to learn here. Here’s some funds I’m looking into:
Large cap- FCNTX, AGTHX
Small cap- OPOCX, NESGX, OMCIX
Tech heavy- FSPTX, FSELX

I understand these are mutual funds and I’m trying to figure out if I do add some of these more risky funds how does that work within a Roth IRA?
What does portfolio turn over matter within a Roth IRA or even expense ratio?

Until I figure it out I’m just going to keep stacking SPY and VOO. Thanks for the help if you got it! Also lead me to some good books if you have any to recommend.