Confused with deed/title...

I am currently looking to invest in tax lein sales. Once I found out that the redemption period could be severely reduced if you purchase an “over the counter” tax certificate, I immediately started researching. Although the vast majority were worthless or on a side of town that I wouldn’t want to say in. Anyway, if I purchase one as a direct sale and apply for the deed will it be officially my property? Can I rent it out or sell it? Do I still have to apply for a Quiet title?