TXbro : "So is it ok to have a Novus Ordo preist here my confession?"
No, basically there is no licit confession anywhere today to the best of my knowledge. You may find this shocking or unbelievable (and as Redbeard said, it may be a bit early for you to delve into those issues) so don't take my word for it, just keep it in the back of your mind, go out trying things out by yourself ; and if, after a time, you find that all the communities you tried are not really helpful to your spiritual life (as happens to many people today), you might find what I'm saying more plausible and consider looking deeper into it.
TXbro : "If I understand correctly, is his sacrament still valid but illicit? What does illicit mean in this context ?"
If the priest has been ordained in the new, invalid rite (or by a non-bishop ordained according to the new invalid rite for the consecration of bishops), his confessions are invalid, i.e. he is not a priest at all, and whether he knows it or not, he is only mimicking and pretending to give sacrements. It's like what happens during phone sex, the people are only pretending.
If, on the other hand, the priest has been ordained in the old, valid rite, he is really a priest and what he does is valid. But if he supports heretic ideas such as gay marriage, or is a member of a non-Catholic sect (the FSSPX or the Orthodox Church), what he does is also illicit, i.e. against the law of the Church.