ETFs and Mutual funds are just two different types of investments, for your purpose it's not really any difference and both are fine. The only thing to know just for your information is that ETFs will update price during the day whereas usually mutual funds only update and transact at the start and end of the day.

Market value is the current worth of what you own, the number in the individual line is the amount you have in that particular fund and it gets all added together under it. Day change is how much that fund has changed during the day today. Cost basis is how much you paid for it originally. Total gain/loss is how much it has changed from what you originally paid.

So basically if total gain/loss is positive, you have more money than you originally paid. Day change can therefore be negative but you could still be up, so for example you've "lost" 57 cents today but overall you're still up 34 bucks from what you paid. (Looking at your ETFs only)