Feeling a little lost

[stigmata]

It kinda sounds like your over-thinking the problem. Just keep reading and it is clear that some posters provide well-reasoned advice, and others are clearly stupid. But even the bad advice gives you the opportunity to get in the head of your opponent, which is not without value. The more you analyse hands on a day-to-day basis, the more your brain becomes inately tuned into the fundementals of hand ranges, EV, etc.