First, I apologize if I'm posting this in the wrong section; there are so many it's tough to decide where to post my questions.
I grew up Catholic and was fully received in the Church through the sacraments (Baptism, Confirmation, Confession, and Eucharist). Sometime around my early 20s I basically stopped going to Mass and pretty much just disregarded the church altogether. I later started going to protestant churches and have been doing that off and on to one degree or another over the past 18 or so years. So I never left my love for Christ at the door just my belief that the Catholic Church doctrine and practices held the keys. Recently I've started looking more closely at a lot of the Catholic's church's doctrine and realized that I am truly a Catholic at heart and should return to the Church.
I'm looking for help and answer's on just how to go about doing this. I have A LOT of baggage that I'm not sure how to address in my initial confession so that I can start receiving the Eucharist again. Some highlights: I'm currently married to a baptized (but not fully received) woman and we have a baby on the way within a month or so (that I would like baptized into the Chrurch). I was married previously outside of the church to a non-baptized Catholic (she was Lutheran) and we have two children together. I have another child with a woman whom I was never married to. So clearly my choices in regards to chastity in the past fall clearly within the churches moral no-no teachings. However, having never lost site of my love of Christ, I've spent hours praying about these sins and others I felt were dragging on my soul. I know this doesn't equate to absolution by Catholic doctrine but I most certainly have been contrite over these matters and sought forgiveness from God.
With this context in mind, here are my main questions. I greatly appreciate any doctrinally-grounded advice on this matter. I appreciate encouragement but really just need to know what I need to do to get myself and my family right before God and the Church according to Catholic doctrine so we can start enjoying the fullness of Catholic Church and ensure our place in Heaven.
1) How do I go about doing a confession for over 15 years of being separated from the Church and doing lots of sinful things? Seems like this is more than what would normally be covered in a normal Saturday confessional.
2) What is the status of my current marriage? And if it's considered invalid, would I still be able to baptize our daughter before it, along with my previous marriage, was officially declared null and we had the chance to re-marry in the Church (all of which I assume is lengthy process)?
3) I received the sacraments in the Roman Catholic church so if I wanted to join a other-than-Roman church (Maronite for example), would I need to start over? Or what would it mean to do so?
PS I don't know if any clergy read or are on these forums but if so and you're in the Minneapolis/St Pau Archdiocese please message me... Thanks