Tom,
I am not convinced there is any other way to determine the correct view of, say, baptism than a historical, contextual, grammatical interpretation of Scripture. We use the same principles when reading a local newspaper or in conversation with people.
The difficulty with OT and NT interpretation is that we are dealing with middle-eastern cultures and foreign languages that have been translated into English. I highly recommend taking a hermeneutics (biblical interpretation) course at a local theological college or an online course to understand the principles of hermeneutics. For the laity, Gordon Fee & Douglas Stuart have written a terrific little book (265pp) on biblical interpretation,
How to Read the Bible for All It's Worth: A Guide to Understanding the Bible, 2nd ed 1993. Grand Rapids, Michigan: Zondervan.
Knowing the biblical languages is a great help, but for most people that will not be achieved. Therefore, I recommend a comparison of several committee Bible translations of both dynamic equivalence (meaning for meaning) and formal equivalence (word for word) varieties.
I would use these formal equivalence (all available online):
- ESV
- NASB
- NRSV
- HCSB
- NKJV
- Lexham English Bible
These dynamic equivalence translations:
- NIV
- NLT
- NET
- ISV (only NT available at present)
As for discerning who has a genuine experience with the Holy Spirit after salvation, I would give up trying to discern as it is very subjective. That's why I concentrate on the principles of biblical interpretation to better understand Scripture and not on existential experiences with the Spirit and 'the Spirit told me so' dynamics. There is too much questionable or even fraudulent activity happening in the name of experiences of the Spirit. The genuine will become evident when Holy Spirit revival breaks out. I recommend you take a read of D Martyn Lloyd-Jones,
Prove All Things: The Sovereign Work of the Holy Spirit. Eastbourne: Kingsway Publications. Remember what Jesus said about the wheat and the weeds growing together until harvest time?