Ok. I've only skim read the thread. But here's my thoughts.
For me I don't focus on 'the rules'.
As a Christian this is all about my relationship with Jesus, which is lived out within a community of believers.
I'm trying to become the best person I can be, which is like Jesus. He helps me to do that.
My family, the church, help me do that.
So I don't really think about the rules, first. I think how can I be like Jesus?
Some things I find easier, some things I find harder. It is useful for me to have some basic rules to help me get started on the stuff I find harder.
Do not murder other people is a start, I find that quite easy, but loving them to the point where I give up my my wants, needs, time, finances, comfort etc for them is harder.
Fasting I find really hard. My church gives some rules to help people like me who struggle with that. So I try to follow them, some times I fail. But I know that succeeding with those rules is just the start of a journey, the actual goal is far further.
My church encourages us (badly) to give to the poor. (Actually we dont have rules about this so it might be a bad example) I'm not very good at that. But Jesus wants us to 'sell all our possessions and give to the poor'. I'm a long way from that. But I can start the journey by throwing a couple of items in the food bank, maybe next week I'll manage to give a couple of quid to the homeless shelter as well.
Some rules I used to find hard, but now they are easier, because I understand the 'why' of them better. Or I have realised that although I don't 'get' a certain thing, that actually it is really not that major in my life.
The important thing is that relationship with Jesus. As I grow in that the 'rules' fall into place. And if I struggle with some forever, then so be it. I'm not going to be perfect in this life, but I'll understand in the next life.
If its christianity you want to explore, no-one expects you to be perfect and understand everything at the beginning. It's the journey of a life time. Feel free to dabble at the edges, or jump right in. We know we are not perfect (Or if we think we are, then that's proof we're not!). No one is should be expecting you to be anything you aren't.