Just bought my first pathfinder today! Happened across this fairly well maintained 1999 R50 3.3L VG Pathfinder with 4x4 for $1500. Drove it about 150 miles today after purchasing it and it runs pretty great for a 25 year old car, tested the 4hi/lo in a parking lot and it didn't have any issues. Only a few negatives; A/C doesn't work, had OBD2 codes of P0115 and P0300, and one small rust spot on a rear door panel (but none under the body or frame!). Got it for a fun recreational vehicle/into to learning to work on cars, not a daily driver. I've done basic work on my daily (oil/fluid changes, A/C blower motor, spark plugs, etc) but nothing very complicated. I want to learn and can follow pretty much any video though. Any recommendations on what to look at (replace/repair etc.) first to ensure that I can make it last as long as possible under my care?
Pic of vehicle: https://imgur.com/a/u9PnR6U