Should I get an IRA if I don't have regular income? I make $$$, just not consistently. Someone advised me to get a Traditional IRA because my income isn't consistent. Which IRA should I get?

2nd question: How will I be able to see my current balance? Will it come in a monthly statement or? And why are IRA's better than just having it in a bank account? Interest is better? or what?

thanks

I do work sometimes [freelance], but my job doesn't offer IRA / direct deposits or anything, so yeah.